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| answers
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|---|---|---|---|---|---|---|
Cuaderno_2013_1_Q | 2013 | chemistry | 218 | The presence of which of the following structural arrangements in a protein suggests that it is a regulatory protein for DNA binding: | 5 | [
{
"aid": 1,
"atext": "Plate ."
},
{
"aid": 2,
"atext": "Disordered region."
},
{
"aid": 3,
"atext": "Helix ."
},
{
"aid": 4,
"atext": "Chaperones"
},
{
"aid": 5,
"atext": "Finger of zinc."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 219 | The chemical reactions of the splicing process of the introns during the maturation of the pre-mRNAs consists of: | 3 | [
{
"aid": 1,
"atext": "An oxidation-reduction reaction."
},
{
"aid": 2,
"atext": "A transesterification reaction."
},
{
"aid": 3,
"atext": "Two sequential transesterification reactions."
},
{
"aid": 4,
"atext": "Three sequential transesterification reactions."
},
{
"aid": 5,
"atext": "A transesterification reaction followed by another oxidation reaction."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 220 | DNA fotoliasa: | 1 | [
{
"aid": 1,
"atext": "Repairs cyclobutane pyrimidine dimers in the presence of visible light."
},
{
"aid": 2,
"atext": "It binds to DNA specifically in purine dimers."
},
{
"aid": 3,
"atext": "It contains three chromophores."
},
{
"aid": 4,
"atext": "It is present in all eukaryotic cells."
},
{
"aid": 5,
"atext": "It breaks the bonds that link pyrimidine rings and then dissociates in the presence of visible light."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 221 | In protein biosynthesis: | 2 | [
{
"aid": 1,
"atext": "The information contained in the two DNA chains is translated."
},
{
"aid": 2,
"atext": "The messenger RNA is translated in the 5'-3'direction."
},
{
"aid": 3,
"atext": "Initiation occurs in the promoter sequence."
},
{
"aid": 4,
"atext": "Start with the most abundant amino acid."
},
{
"aid": 5,
"atext": "Start with different amino acid according to the protein to be synthesized."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 222 | The new proteins destined for secretion are synthesized in: | 5 | [
{
"aid": 1,
"atext": "Golgi apparatus."
},
{
"aid": 2,
"atext": "Smooth endoplasmic reticulum."
},
{
"aid": 3,
"atext": "Free polysomes."
},
{
"aid": 4,
"atext": "Nucleus."
},
{
"aid": 5,
"atext": "Rough endoplasmic reticulum."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 223 | During a prolonged fast: | 3 | [
{
"aid": 1,
"atext": "The low level of blood sugar decreases the secretion of glucagon and increase the insulin."
},
{
"aid": 2,
"atext": "Decreases the concentration of acetyl-CoA."
},
{
"aid": 3,
"atext": "The main fuel of the organism happens to be the fatty acids and the ketone bodies."
},
{
"aid": 4,
"atext": "The proteins are degraded and replenished immediately."
},
{
"aid": 5,
"atext": "The brain and the heart use fatty acids as fuels."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 224 | Which of the following answers is correct regarding a tRNA? | 4 | [
{
"aid": 1,
"atext": "The tRNA has an anticodon that recognizes the template DNA."
},
{
"aid": 2,
"atext": "The amino acid is attached to the 5'-end."
},
{
"aid": 3,
"atext": "It contains a polyA tail at its 3 'end."
},
{
"aid": 4,
"atext": "It may contain pseudouridin and inosine."
},
{
"aid": 5,
"atext": "It serves as a gene for some viruses."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 225 | Which of the following statements regarding the double-stranded DNA molecule is true? | 2 | [
{
"aid": 1,
"atext": "All the hydroxyl groups of the pentoses participate in the bonds."
},
{
"aid": 2,
"atext": "The bases are perpendicular to the axis."
},
{
"aid": 3,
"atext": "Each chain is identical."
},
{
"aid": 4,
"atext": "Each chain is parallel."
},
{
"aid": 5,
"atext": "Each chain replicates itself."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 226 | Relating to topoisomerases: | 5 | [
{
"aid": 1,
"atext": "They are enzymes that convert the D-amino acids into L-amino acids."
},
{
"aid": 2,
"atext": "They are enzymes that synthesize DNA."
},
{
"aid": 3,
"atext": "They are enzymes that participate in the union of the subunits of the ribosome."
},
{
"aid": 4,
"atext": "They are enzymes that denature DNA."
},
{
"aid": 5,
"atext": "DNA gyrase is a special toposiomerase."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 227 | An exergonic reaction: | 1 | [
{
"aid": 1,
"atext": "It is always spontaneous."
},
{
"aid": 2,
"atext": "It is always endothermic."
},
{
"aid": 3,
"atext": "It is done at a great speed."
},
{
"aid": 4,
"atext": "G is positive."
},
{
"aid": 5,
"atext": "All are correct."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 228 | In what units is usually expressed the coefficient of molar absorptivity? | 4 | [
{
"aid": 1,
"atext": "mL mol-1 cm."
},
{
"aid": 2,
"atext": "L mol-1 cm-3."
},
{
"aid": 3,
"atext": "Photons per mole."
},
{
"aid": 4,
"atext": "M-1 cm-1."
},
{
"aid": 5,
"atext": "It is dimensionless."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 229 | Which compound acts as a sulfhydryl buffer and as an antioxidant? | 4 | [
{
"aid": 1,
"atext": "Glycogen"
},
{
"aid": 2,
"atext": "Glutamic acid."
},
{
"aid": 3,
"atext": "Glucagon."
},
{
"aid": 4,
"atext": "Glutathione"
},
{
"aid": 5,
"atext": "Ascorbic acid."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 230 | Heating of 4-methoxy-3,5-dinitrobenzenesulfonic acid with dilute sulfuric acid gives: | 4 | [
{
"aid": 1,
"atext": "4-Methoxy-3,5-dinitrophenol."
},
{
"aid": 2,
"atext": "3,5-Diamino-4-methoxybenzenesulfonic acid."
},
{
"aid": 3,
"atext": "4-methoxy-3,5-dinitrobenzenesulfonic acid anhydride"
},
{
"aid": 4,
"atext": "2-Methoxy-1,3-dinitrobenzene."
},
{
"aid": 5,
"atext": "An organic cation"
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 231 | In the homogeneous nucleation: | 2 | [
{
"aid": 1,
"atext": "If the solid particles formed under solidification have a radius less than the critical radius, the energy of the system will be lower if its size increases."
},
{
"aid": 2,
"atext": "If the solid particles formed under solidification have a radius smaller than the critical radius, the energy of the system will be lower if it is redissolved."
},
{
"aid": 3,
"atext": "If the solid particles formed under solidification have a radius greater than the critical radius, the energy of the system will be lower if it is redissolved."
},
{
"aid": 4,
"atext": "If the solid particles formed under solidification have a radius equal to the critical, the energy of the system will be lower if it is redissolved."
},
{
"aid": 5,
"atext": "There is no relationship between the critical radius and the tendency to grow in size or redissolve."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 232 | In the Urea Cycle, where is the hydrolysis of ATP required? | 4 | [
{
"aid": 1,
"atext": "In the formation of Citrulline."
},
{
"aid": 2,
"atext": "In the Ornithine formation."
},
{
"aid": 3,
"atext": "In the formation of Urea."
},
{
"aid": 4,
"atext": "In the formation of Carbamoyl-Phosphate."
},
{
"aid": 5,
"atext": "3 and 4 are correct."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 233 | Ferrous oxide, known as wustite (FeO) is non-stoichiometric because it contains: | 3 | [
{
"aid": 1,
"atext": "Excess iron"
},
{
"aid": 2,
"atext": "Oxygen excess"
},
{
"aid": 3,
"atext": "Iron defect."
},
{
"aid": 4,
"atext": "Oxygen defect."
},
{
"aid": 5,
"atext": "Defect of iron and oxygen."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 234 | Which of the nucleophiles listed below has a greater reactivity to the bimolecular nucleophilic substitution reaction? | 2 | [
{
"aid": 1,
"atext": "Hydroxide."
},
{
"aid": 2,
"atext": "I last."
},
{
"aid": 3,
"atext": "Ammonia."
},
{
"aid": 4,
"atext": "Water."
},
{
"aid": 5,
"atext": "Acetic acid."
}
] |
Cuaderno_2013_1_Q | 2013 | chemistry | 235 | The three-dimensional arrangement of a protein corresponds to: | 3 | [
{
"aid": 1,
"atext": "Its primary structure"
},
{
"aid": 2,
"atext": "Its secondary structure."
},
{
"aid": 3,
"atext": "Its tertiary structure."
},
{
"aid": 4,
"atext": "Its quaternary structure."
},
{
"aid": 5,
"atext": "With its primary, secondary, tertiary and quaternary structure."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 1 | It gives the plasma membrane high water permeability: | 1 | [
{
"aid": 1,
"atext": "Aquaporins."
},
{
"aid": 2,
"atext": "Ionic channels."
},
{
"aid": 3,
"atext": "Na + / K + -ATPase."
},
{
"aid": 4,
"atext": "Cl / HCO3 exchanger."
},
{
"aid": 5,
"atext": "Its lipid composition."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 2 | The action potential starts in the membrane of the initial segment of the axon by: | 3 | [
{
"aid": 1,
"atext": "Be the place where the synapse occurs."
},
{
"aid": 2,
"atext": "Have a higher excitation threshold."
},
{
"aid": 3,
"atext": "Present high concentration of voltage-dependent channels."
},
{
"aid": 4,
"atext": "Present Na + channels regulated by ligand"
},
{
"aid": 5,
"atext": "Start there the axon myelin sheath."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 3 | A potential receiver: | 5 | [
{
"aid": 1,
"atext": "It is produced by the opening of voltage-dependent channels."
},
{
"aid": 2,
"atext": "Increase its frequency if the intensity of the stimulus increases."
},
{
"aid": 3,
"atext": "It occurs after the binding of the neurotransmitter to the postsynaptic receptor."
},
{
"aid": 4,
"atext": "They occur if the trigger threshold is exceeded."
},
{
"aid": 5,
"atext": "It can be exciter or inhibitor."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 4 | In smooth muscle fibers: | 5 | [
{
"aid": 1,
"atext": "The functional unit is the sarcomere."
},
{
"aid": 2,
"atext": "The contraction is regulated by troponin."
},
{
"aid": 3,
"atext": "The autonomous system always innervates all fibers."
},
{
"aid": 4,
"atext": "Actinamyosin cross bridges do not form."
},
{
"aid": 5,
"atext": "There may be hormone receptors."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 5 | Regarding the tendon reflex of Golgi: | 2 | [
{
"aid": 1,
"atext": "It is monosynaptic."
},
{
"aid": 2,
"atext": "The receptors are in series with the extrafusal muscle fibers."
},
{
"aid": 3,
"atext": "It is mediated by afferent fibers type la and ll."
},
{
"aid": 4,
"atext": "Activates α-motor neurons that innervate the muscle in which the receptor is located."
},
{
"aid": 5,
"atext": "It is very sensitive to changes in muscle length."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 6 | In the parasympathetic system: | 2 | [
{
"aid": 1,
"atext": "The preganglionic neuron is in thoracic spinal cord."
},
{
"aid": 2,
"atext": "Postganglionic neurons have short axons."
},
{
"aid": 3,
"atext": "Postganglionic fibers release noradrenaline."
},
{
"aid": 4,
"atext": "Postganglionic neurons have muscarinic receptors."
},
{
"aid": 5,
"atext": "Numerous neurons innervate vascular smooth muscle of the extremities."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 7 | They are secondary interoceptor mechanoreceptors: | 3 | [
{
"aid": 1,
"atext": "The corpuscle of Pacini and Ruffini."
},
{
"aid": 2,
"atext": "The taste buds."
},
{
"aid": 3,
"atext": "The receptors of the vestibular apparatus."
},
{
"aid": 4,
"atext": "The hair cells of the organ of Corti."
},
{
"aid": 5,
"atext": "The muscle bones."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 8 | Spatial discrimination of tactile stimuli: | 3 | [
{
"aid": 1,
"atext": "It increases with the size of the receiving fields."
},
{
"aid": 2,
"atext": "It increases if the convergence of the afferent pathways is large."
},
{
"aid": 3,
"atext": "Increase if there is lateral inhibition"
},
{
"aid": 4,
"atext": "It is independent of the density of innervation."
},
{
"aid": 5,
"atext": "It depends only on the type of activated receiver."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 9 | The optical path partially decimates in: | 3 | [
{
"aid": 1,
"atext": "The optical band."
},
{
"aid": 2,
"atext": "The geniculate body."
},
{
"aid": 3,
"atext": "The optic chiasm"
},
{
"aid": 4,
"atext": "The retina."
},
{
"aid": 5,
"atext": "The optical disc."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 10 | In the human eye: | 3 | [
{
"aid": 1,
"atext": "Photoreceptors contact the vitreous humor."
},
{
"aid": 2,
"atext": "The accommodation is due to the increase in the curvature of the cornea."
},
{
"aid": 3,
"atext": "The pigmentary epithelium participates in the regeneration of rhodopsin."
},
{
"aid": 4,
"atext": "The cones and rods are distributed homogeneously throughout the retina."
},
{
"aid": 5,
"atext": "The greatest refractive power is in the lens."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 11 | In the human ear: | 4 | [
{
"aid": 1,
"atext": "The stereocilia of the sensory cells are bathed in perilymph."
},
{
"aid": 2,
"atext": "The abutment fits over the round window."
},
{
"aid": 3,
"atext": "The sensory cells are on the Reissner membrane."
},
{
"aid": 4,
"atext": "The synaptan receptor cells with fibers from the eighth cranial nerve."
},
{
"aid": 5,
"atext": "The helicotrema communicates the middle and tympanic ramps."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 13 | After the intake increases the release of: | 1 | [
{
"aid": 1,
"atext": "Insulin."
},
{
"aid": 2,
"atext": "ACTH."
},
{
"aid": 3,
"atext": "Cortisol"
},
{
"aid": 4,
"atext": "Adrenaline from the adrenal medulla."
},
{
"aid": 5,
"atext": "GH"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 14 | Motor cranial nerves: | 2 | [
{
"aid": 1,
"atext": "They have their somas in the dorsal ganglia of the cervical region."
},
{
"aid": 2,
"atext": "They originate in the brainstem."
},
{
"aid": 3,
"atext": "They receive the name of the medullary region through which they exit."
},
{
"aid": 4,
"atext": "They belong only to the somatic nervous system."
},
{
"aid": 5,
"atext": "They originate in the cerebral cortex."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 15 | The main function of the cerebellum is: | 1 | [
{
"aid": 1,
"atext": "Coordinate complex muscle movements."
},
{
"aid": 2,
"atext": "Coordinate endocrine and nervous responses."
},
{
"aid": 3,
"atext": "Control digestion, circulation and breathing."
},
{
"aid": 4,
"atext": "Control the wake-sleep cycle."
},
{
"aid": 5,
"atext": "Control the intake."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 16 | Controls the passage of substances to the central nervous system: | 3 | [
{
"aid": 1,
"atext": "Meninges."
},
{
"aid": 2,
"atext": "Choroid plexus."
},
{
"aid": 3,
"atext": "Hemato-encephalic barrier."
},
{
"aid": 4,
"atext": "White substance"
},
{
"aid": 5,
"atext": "Schwann cells and oligodendrocytes."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 17 | They send efferent projections from the cerebellar cortex the: | 1 | [
{
"aid": 1,
"atext": "Purkinje cells."
},
{
"aid": 2,
"atext": "Climbing fibers"
},
{
"aid": 3,
"atext": "Granular cells."
},
{
"aid": 4,
"atext": "Horizontal cells."
},
{
"aid": 5,
"atext": "Mossy fibers."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 18 | The sensory signals arrive mainly at the layer of the cerebral cortex number: | 3 | [
{
"aid": 1,
"atext": "II."
},
{
"aid": 2,
"atext": "III."
},
{
"aid": 3,
"atext": "IV."
},
{
"aid": 4,
"atext": "V."
},
{
"aid": 5,
"atext": "SAW."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 19 | The cells of the sinus node present: | 4 | [
{
"aid": 1,
"atext": "Stable membrane potential."
},
{
"aid": 2,
"atext": "Contractile capacity"
},
{
"aid": 3,
"atext": "Depolarization faster than Purkinje fibers."
},
{
"aid": 4,
"atext": "Depolarization mediated by Ca2 + channels."
},
{
"aid": 5,
"atext": "Long plateau."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 20 | A hemorrhage: | 2 | [
{
"aid": 1,
"atext": "Activates the arterial baroreceptors."
},
{
"aid": 2,
"atext": "It produces peripheral vasoconstriction."
},
{
"aid": 3,
"atext": "Reduce ADH levels."
},
{
"aid": 4,
"atext": "Inhibits the renin-angiotensin-aldosterone axis."
},
{
"aid": 5,
"atext": "Releases natriuretic atrial peptide."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 21 | Vasconstricts systemic arterioles: | 3 | [
{
"aid": 1,
"atext": "Low pO2."
},
{
"aid": 2,
"atext": "Low pH."
},
{
"aid": 3,
"atext": "Angiotensin II."
},
{
"aid": 4,
"atext": "Acetylcholine"
},
{
"aid": 5,
"atext": "Nitric oxide."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 22 | Increase the stroke volume if: | 2 | [
{
"aid": 1,
"atext": "Increase afterload."
},
{
"aid": 2,
"atext": "Increase the preload."
},
{
"aid": 3,
"atext": "The sympathetic is inhibited."
},
{
"aid": 4,
"atext": "Decreases venous return."
},
{
"aid": 5,
"atext": "Increase heart rate"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 23 | Cardiac output decreases the increase of: | 3 | [
{
"aid": 1,
"atext": "The volemia."
},
{
"aid": 2,
"atext": "The venous return."
},
{
"aid": 3,
"atext": "Vagal activity."
},
{
"aid": 4,
"atext": "The end-diastolic volume."
},
{
"aid": 5,
"atext": "The myocardial contractility."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 24 | An increase in blood pressure between 80 and 150 mmHg increases diuresis because: | 2 | [
{
"aid": 1,
"atext": "The glomerular filtration increases exponentially."
},
{
"aid": 2,
"atext": "Decreases the peritubular reabsorption of water."
},
{
"aid": 3,
"atext": "The efferent arteriole contracts."
},
{
"aid": 4,
"atext": "Proportionally increases renal blood flow."
},
{
"aid": 5,
"atext": "The afferent arteriole contracts."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 25 | The atrial syncytium is separated from the ventricular by: | 3 | [
{
"aid": 1,
"atext": "The atrio-ventricular valves."
},
{
"aid": 2,
"atext": "The semilunar valves."
},
{
"aid": 3,
"atext": "The fibrous skeleton."
},
{
"aid": 4,
"atext": "The interventricular septum."
},
{
"aid": 5,
"atext": "The Beam of His."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 27 | The papillary muscles: | 2 | [
{
"aid": 1,
"atext": "They contract atrio-ventricular valves."
},
{
"aid": 2,
"atext": "They prevent the reflux of blood to the atria."
},
{
"aid": 3,
"atext": "They avoid the eversion of the semilunar valves."
},
{
"aid": 4,
"atext": "They form the interventricular septum."
},
{
"aid": 5,
"atext": "They are formed by visceral smooth muscle."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 28 | The first level of heart rate and respiratory control is: | 4 | [
{
"aid": 1,
"atext": "The cerebral cortex"
},
{
"aid": 2,
"atext": "Spinal cord."
},
{
"aid": 3,
"atext": "The cerebellum"
},
{
"aid": 4,
"atext": "The bulb."
},
{
"aid": 5,
"atext": "The hypothalamus"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 29 | The pulmonary surfactant: | 2 | [
{
"aid": 1,
"atext": "It is secreted by type I pneumocytes."
},
{
"aid": 2,
"atext": "Stabilizes the alveoli."
},
{
"aid": 3,
"atext": "Its main component is albumin."
},
{
"aid": 4,
"atext": "Increases the surface tension of the alveolus."
},
{
"aid": 5,
"atext": "It is only in the small alveoli."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 30 | The functional residual capacity is volume: | 1 | [
{
"aid": 1,
"atext": "Residual plus expiratory reserve."
},
{
"aid": 2,
"atext": "Pulmonary after forced expiration."
},
{
"aid": 3,
"atext": "Residual."
},
{
"aid": 4,
"atext": "Maximum that can be inspired."
},
{
"aid": 5,
"atext": "Current plus expiratory reserve."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 31 | The stimulation of the carotid bodies: | 2 | [
{
"aid": 1,
"atext": "Decreases the pH of arterial blood."
},
{
"aid": 2,
"atext": "PCO2 decreases in arterial blood."
},
{
"aid": 3,
"atext": "Increases the arterial concentration of bicarbonate."
},
{
"aid": 4,
"atext": "Increases the urinary excretion of sodium."
},
{
"aid": 5,
"atext": "Lowers blood pressure"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 32 | Alveolar ventilation is the volume of air that: | 4 | [
{
"aid": 1,
"atext": "It enters (or exits) the lungs in each breath."
},
{
"aid": 2,
"atext": "It enters (or exits) in the airways every minute."
},
{
"aid": 3,
"atext": "It remains in the alveoli after a normal expiration."
},
{
"aid": 4,
"atext": "Enter (or exit) in the lung exchange zones in one minute"
},
{
"aid": 5,
"atext": "It remains in the alveoli after a forced expiration."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 33 | On the thick ascending branch of the loop of Henle: | 2 | [
{
"aid": 1,
"atext": "Water is reabsorbed."
},
{
"aid": 2,
"atext": "The tubular liquid is diluted."
},
{
"aid": 3,
"atext": "Water reabsorption depends on ADH."
},
{
"aid": 4,
"atext": "The reabsorption of urea depends on ADH."
},
{
"aid": 5,
"atext": "Aldosterone stimulates Na + reabsorption."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 34 | In the kidney, sympathetic stimulation increases: | 5 | [
{
"aid": 1,
"atext": "The renal excretion of sodium."
},
{
"aid": 2,
"atext": "The renal excretion of water."
},
{
"aid": 3,
"atext": "The radius of the afferent arteriole."
},
{
"aid": 4,
"atext": "Glomerular filtration."
},
{
"aid": 5,
"atext": "The release of renin."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 35 | ADH increases the osmolality of the renal interstitial medium because it increases: | 1 | [
{
"aid": 1,
"atext": "The permeability to urea in the collector tube."
},
{
"aid": 2,
"atext": "The water permeability of the ascending loop of Henle."
},
{
"aid": 3,
"atext": "The flow in the straight vessels."
},
{
"aid": 4,
"atext": "The reabsorption of NaCl in the collecting tubule."
},
{
"aid": 5,
"atext": "The renal excretion of water."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 36 | In biliary secretion there are: | 4 | [
{
"aid": 1,
"atext": "Carboxypeptidase"
},
{
"aid": 2,
"atext": "Trypsin"
},
{
"aid": 3,
"atext": "Chymotrypsin"
},
{
"aid": 4,
"atext": "Lecithin."
},
{
"aid": 5,
"atext": "Elatasa"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 37 | The main stimulus for secretion of secretin is the presence in the duodenum of: | 1 | [
{
"aid": 1,
"atext": "acid pH"
},
{
"aid": 2,
"atext": "Carbohydrates"
},
{
"aid": 3,
"atext": "Proteins"
},
{
"aid": 4,
"atext": "Hypoosmolar chimo."
},
{
"aid": 5,
"atext": "Hyosmolar chyme."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 38 | Glucagon stimulates: | 4 | [
{
"aid": 1,
"atext": "Glycogen synthesis"
},
{
"aid": 2,
"atext": "Formation of fat deposits."
},
{
"aid": 3,
"atext": "Protein synthesis."
},
{
"aid": 4,
"atext": "Insulin secretion"
},
{
"aid": 5,
"atext": "Glucolysis"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 39 | Somatomedin IGF-1 causes: | 4 | [
{
"aid": 1,
"atext": "Secretion of GHRH."
},
{
"aid": 2,
"atext": "Protein catabolism."
},
{
"aid": 3,
"atext": "Hyperglycemia"
},
{
"aid": 4,
"atext": "Activation of osteoblasts"
},
{
"aid": 5,
"atext": "GH secretion"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 40 | An increase in ACTH stimulates the synthesis and release of: | 2 | [
{
"aid": 1,
"atext": "Aldosterone"
},
{
"aid": 2,
"atext": "Cortisol"
},
{
"aid": 3,
"atext": "Thyroxine"
},
{
"aid": 4,
"atext": "CRH"
},
{
"aid": 5,
"atext": "TRH"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 41 | Angiotensin II: | 4 | [
{
"aid": 1,
"atext": "It is formed by the action of renin on angiotensin I."
},
{
"aid": 2,
"atext": "Inhibits the secretion of aldosterone."
},
{
"aid": 3,
"atext": "It inhibits the secretion of ADH."
},
{
"aid": 4,
"atext": "Induces renal reabsorption of Na +."
},
{
"aid": 5,
"atext": "Reduce thirst"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 42 | It is under the control of the hypothalamic-pituitary axis the secretion of: | 1 | [
{
"aid": 1,
"atext": "Cortisol"
},
{
"aid": 2,
"atext": "Insulin."
},
{
"aid": 3,
"atext": "Calcitonin"
},
{
"aid": 4,
"atext": "Glucagon."
},
{
"aid": 5,
"atext": "Parathormone."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 43 | The secretion of GH or growth hormone: | 2 | [
{
"aid": 1,
"atext": "It stops at 20 years old."
},
{
"aid": 2,
"atext": "It last for ever."
},
{
"aid": 3,
"atext": "During the day it is greater than at night."
},
{
"aid": 4,
"atext": "It is stimulated by somatostatin."
},
{
"aid": 5,
"atext": "It is stimulated by the substances."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 44 | The anterior pituitary gland: | 2 | [
{
"aid": 1,
"atext": "It is part of the hypothalamus."
},
{
"aid": 2,
"atext": "It is regulated hormonally."
},
{
"aid": 3,
"atext": "It communicates with the neurohypophysis."
},
{
"aid": 4,
"atext": "It releases ADH and oxytocin."
},
{
"aid": 5,
"atext": "It is formed by neurons."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 45 | Stimulates lipogenesis and glycogen synthesis: | 1 | [
{
"aid": 1,
"atext": "Insulin."
},
{
"aid": 2,
"atext": "Glucagon."
},
{
"aid": 3,
"atext": "Cortisol"
},
{
"aid": 4,
"atext": "Adrenalin."
},
{
"aid": 5,
"atext": "GH"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 46 | The ribosomal proteins bind to the rRNA in the: | 4 | [
{
"aid": 1,
"atext": "Nuclear pore complex."
},
{
"aid": 2,
"atext": "Cytoplasm."
},
{
"aid": 3,
"atext": "Nucleoplasm."
},
{
"aid": 4,
"atext": "Nucleolo."
},
{
"aid": 5,
"atext": "Citosol"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 47 | Proteins that do not fold properly in the endoplasmic reticulum are degraded into: | 4 | [
{
"aid": 1,
"atext": "Golgi complex."
},
{
"aid": 2,
"atext": "Endosomes"
},
{
"aid": 3,
"atext": "Lysosomes"
},
{
"aid": 4,
"atext": "Citosol"
},
{
"aid": 5,
"atext": "Nucleus."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 48 | The synthesis of membrane phospholipids occurs in: | 3 | [
{
"aid": 1,
"atext": "Citosol"
},
{
"aid": 2,
"atext": "Polyribosomes"
},
{
"aid": 3,
"atext": "Endoplasmic reticulum."
},
{
"aid": 4,
"atext": "Golgi complex."
},
{
"aid": 5,
"atext": "Peroxisome"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 51 | The ARP2 / 3 complex: | 3 | [
{
"aid": 1,
"atext": "It is an intermediate filament nucleator agent."
},
{
"aid": 2,
"atext": "It is located in the centrosome."
},
{
"aid": 3,
"atext": "It is responsible for the branching of the actin filaments."
},
{
"aid": 4,
"atext": "It is part of the nuclear sheet."
},
{
"aid": 5,
"atext": "Involved in the formation of transport vesicles."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 52 | The microvilli contain a beam of: | 2 | [
{
"aid": 1,
"atext": "Microtubules"
},
{
"aid": 2,
"atext": "Actin filaments."
},
{
"aid": 3,
"atext": "Intermediate filaments"
},
{
"aid": 4,
"atext": "Spectrine"
},
{
"aid": 5,
"atext": "Collagen fibers."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 54 | Anaphase A is characterized by the shortening of microtubules: | 1 | [
{
"aid": 1,
"atext": "Kinetochore"
},
{
"aid": 2,
"atext": "Polar"
},
{
"aid": 3,
"atext": "Interpolar"
},
{
"aid": 4,
"atext": "Astral"
},
{
"aid": 5,
"atext": "Longitudinal"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 56 | The p53 factor induces: | 4 | [
{
"aid": 1,
"atext": "Survival."
},
{
"aid": 2,
"atext": "Proliferation."
},
{
"aid": 3,
"atext": "Senescence"
},
{
"aid": 4,
"atext": "Apoptosis"
},
{
"aid": 5,
"atext": "Increase."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 57 | They join the epithelial cells to each other: | 1 | [
{
"aid": 1,
"atext": "Cadherins."
},
{
"aid": 2,
"atext": "Integrins"
},
{
"aid": 3,
"atext": "Fibronectins."
},
{
"aid": 4,
"atext": "Elastins."
},
{
"aid": 5,
"atext": "Laminins"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 58 | The term "own lamina" is equivalent to: | 5 | [
{
"aid": 1,
"atext": "Basal sheet."
},
{
"aid": 2,
"atext": "Internal elastic sheet."
},
{
"aid": 3,
"atext": "Nuclear sheet."
},
{
"aid": 4,
"atext": "Reticular sheet."
},
{
"aid": 5,
"atext": "Loose connective tissue."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 59 | It is absent from connective tissues: | 1 | [
{
"aid": 1,
"atext": "Goblet cell."
},
{
"aid": 2,
"atext": "Adipocy"
},
{
"aid": 3,
"atext": "Mastocito"
},
{
"aid": 4,
"atext": "Lymphocyte"
},
{
"aid": 5,
"atext": "Eosinophilic"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 60 | The feet of the following are an integral part of the blood-brain barrier: | 1 | [
{
"aid": 1,
"atext": "Astrocytes"
},
{
"aid": 2,
"atext": "Timocytes."
},
{
"aid": 3,
"atext": "Podocytes"
},
{
"aid": 4,
"atext": "Ependymal cells."
},
{
"aid": 5,
"atext": "Oligodendrocytes"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 61 | The tissue is avascular: | 1 | [
{
"aid": 1,
"atext": "Epithelial."
},
{
"aid": 2,
"atext": "Conjunctive."
},
{
"aid": 3,
"atext": "Osseous."
},
{
"aid": 4,
"atext": "Muscular."
},
{
"aid": 5,
"atext": "Nervous."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 62 | Derived from blood monocytes: | 4 | [
{
"aid": 1,
"atext": "Protoplasmic astrocyte."
},
{
"aid": 2,
"atext": "Fibrous astrocyte."
},
{
"aid": 3,
"atext": "Oligodendrocyte"
},
{
"aid": 4,
"atext": "Microgliocyte"
},
{
"aid": 5,
"atext": "Satellite cell."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 63 | The transmembrane proteins that bind to intracellular and extracellular proteins are: | 4 | [
{
"aid": 1,
"atext": "Ocludines."
},
{
"aid": 2,
"atext": "Cadherins."
},
{
"aid": 3,
"atext": "Actins."
},
{
"aid": 4,
"atext": "Integrins"
},
{
"aid": 5,
"atext": "Desmocolinas."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 64 | Dense neat or patterned connective tissue is part of: | 2 | [
{
"aid": 1,
"atext": "Hemopoietic stroma."
},
{
"aid": 2,
"atext": "Tendons"
},
{
"aid": 3,
"atext": "Digestive mucosa"
},
{
"aid": 4,
"atext": "Mucosa of the uterus."
},
{
"aid": 5,
"atext": "Sclera"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 65 | The intestinal villi: | 2 | [
{
"aid": 1,
"atext": "They extend throughout the entire intestine."
},
{
"aid": 2,
"atext": "They are not in the large intestine."
},
{
"aid": 3,
"atext": "They are visible only to the electron microscope."
},
{
"aid": 4,
"atext": "They contain only absorbent cells."
},
{
"aid": 5,
"atext": "They lack glasses in their own lamina."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 66 | The Merkel cells are: | 1 | [
{
"aid": 1,
"atext": "Secretors of neuropeptides and sensory."
},
{
"aid": 2,
"atext": "Secretors of mucus."
},
{
"aid": 3,
"atext": "Migratory"
},
{
"aid": 4,
"atext": "From Schwann."
},
{
"aid": 5,
"atext": "Fibroblasts."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 67 | The secretion of the sebaceous glands is: | 4 | [
{
"aid": 1,
"atext": "Merocrine"
},
{
"aid": 2,
"atext": "Apocrine"
},
{
"aid": 3,
"atext": "Paracrine"
},
{
"aid": 4,
"atext": "Holocrine"
},
{
"aid": 5,
"atext": "Endocrine"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 68 | It has superficial cells with abundant glycogen: | 4 | [
{
"aid": 1,
"atext": "Language."
},
{
"aid": 2,
"atext": "Esophagus."
},
{
"aid": 3,
"atext": "Thin skin"
},
{
"aid": 4,
"atext": "Vagina."
},
{
"aid": 5,
"atext": "Thick skin."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 69 | The nucleosomes are: | 4 | [
{
"aid": 1,
"atext": "Only in hetrochromatin."
},
{
"aid": 2,
"atext": "Only in euchromatin."
},
{
"aid": 3,
"atext": "Only in the chromosomes."
},
{
"aid": 4,
"atext": "In euchromatin, in heterochromatin and in chromosomes."
},
{
"aid": 5,
"atext": "In all types of chromatin, but not in chromosomes."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 70 | Contains abundant glycogen: | 1 | [
{
"aid": 1,
"atext": "Hepatocytes"
},
{
"aid": 2,
"atext": "Plasma cells."
},
{
"aid": 3,
"atext": "Lymphocytes"
},
{
"aid": 4,
"atext": "Baited cells."
},
{
"aid": 5,
"atext": "Fibroblasts."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 71 | Dyneins are proteins: | 1 | [
{
"aid": 1,
"atext": "Motorboats"
},
{
"aid": 2,
"atext": "Responsible for the dynamism of the extracellular matrix."
},
{
"aid": 3,
"atext": "Exclusive of the cilia."
},
{
"aid": 4,
"atext": "Exclusives of the flagella."
},
{
"aid": 5,
"atext": "Actin type"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 72 | In the receptor-mediated endocytosis intervenes: | 3 | [
{
"aid": 1,
"atext": "Only the clathrin."
},
{
"aid": 2,
"atext": "Only the adaptin."
},
{
"aid": 3,
"atext": "Adaptine and clathrin."
},
{
"aid": 4,
"atext": "Chaperones"
},
{
"aid": 5,
"atext": "Only the proteins of the membrane."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 73 | Classify proteins and regulate their traffic to their cell destinations: | 1 | [
{
"aid": 1,
"atext": "Golgi apparatus."
},
{
"aid": 2,
"atext": "Ribosomes"
},
{
"aid": 3,
"atext": "Rough endoplasmic reticulum."
},
{
"aid": 4,
"atext": "Mitochondria"
},
{
"aid": 5,
"atext": "Lysosomes"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 74 | In skeletal muscle, they have the capacity to regenerate, although limited, the cells: | 2 | [
{
"aid": 1,
"atext": "Of smaller size."
},
{
"aid": 2,
"atext": "Satelite."
},
{
"aid": 3,
"atext": "Endomysial fibroblasts."
},
{
"aid": 4,
"atext": "Of the glia of the motor plates."
},
{
"aid": 5,
"atext": "Anyone."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 75 | The most important proteoglycan in hyaline cartilage is: | 1 | [
{
"aid": 1,
"atext": "Agrecano"
},
{
"aid": 2,
"atext": "Chondroitin sulfate 4."
},
{
"aid": 3,
"atext": "Heparin."
},
{
"aid": 4,
"atext": "Versicano"
},
{
"aid": 5,
"atext": "Dermatan sulfate."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 76 | It allows to compare proportions of two independent samples the statistical test: | 4 | [
{
"aid": 1,
"atext": "From McNemar."
},
{
"aid": 2,
"atext": "Of Snedecor."
},
{
"aid": 3,
"atext": "Of the median."
},
{
"aid": 4,
"atext": "Exact Fisher."
},
{
"aid": 5,
"atext": "U of Mann-Whitney."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 77 | If a 3% false-positive test is observed in a diagnostic test, it can be stated that: | 2 | [
{
"aid": 1,
"atext": "The sensitivity is 97%."
},
{
"aid": 2,
"atext": "The specificity is 97%."
},
{
"aid": 3,
"atext": "The positive predictive value is 97%."
},
{
"aid": 4,
"atext": "The specificity is 3%."
},
{
"aid": 5,
"atext": "The sensitivity is 3%."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 78 | The arithmetic mean and not the median: | 2 | [
{
"aid": 1,
"atext": "It is a measurement of location."
},
{
"aid": 2,
"atext": "All the values of the sample are involved in its calculation."
},
{
"aid": 3,
"atext": "It is dimensionless."
},
{
"aid": 4,
"atext": "It is not influenced by extreme values."
},
{
"aid": 5,
"atext": "None is correct."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 79 | In a hypothesis test, the beta error is called the probability of: | 5 | [
{
"aid": 1,
"atext": "Accept a null hypothesis being true."
},
{
"aid": 2,
"atext": "Reject a null hypothesis being false."
},
{
"aid": 3,
"atext": "Accept an alternative hypothesis being true."
},
{
"aid": 4,
"atext": "Reject an alternative hypothesis being false."
},
{
"aid": 5,
"atext": "Accept a null hypothesis being false."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 80 | Are concepts that refer to the same probability the level of: | 2 | [
{
"aid": 1,
"atext": "Confidence and type II error:"
},
{
"aid": 2,
"atext": "Significance and type I error"
},
{
"aid": 3,
"atext": "Significance and specificity."
},
{
"aid": 4,
"atext": "Confidence and sensitivity"
},
{
"aid": 5,
"atext": "Significance and type II error."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 81 | African trypanosomes (T. Rhodesiense and T. Gambiense) are transmitted by insects of the genus: | 1 | [
{
"aid": 1,
"atext": "Glossina"
},
{
"aid": 2,
"atext": "Triatoma."
},
{
"aid": 3,
"atext": "Panstrongylus."
},
{
"aid": 4,
"atext": "Rhodnius."
},
{
"aid": 5,
"atext": "Phlebotomus."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 82 | In relation to malaria, pre-erythrocytic schizonts can be found in: | 2 | [
{
"aid": 1,
"atext": "Reticulocytes"
},
{
"aid": 2,
"atext": "Liver cells."
},
{
"aid": 3,
"atext": "Renal cells"
},
{
"aid": 4,
"atext": "Lymphocytes"
},
{
"aid": 5,
"atext": "Eosinophils"
}
] |
Cuaderno_2014_1_B | 2014 | biology | 83 | We can find sputum eggs of: | 2 | [
{
"aid": 1,
"atext": "Clonorchis sinensis."
},
{
"aid": 2,
"atext": "Paragonimus westermani."
},
{
"aid": 3,
"atext": "Hepatic fasciola."
},
{
"aid": 4,
"atext": "Schistosoma japonicum."
},
{
"aid": 5,
"atext": "Dicrocoelium dendriticum."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 84 | The genus Anisakis is a: | 3 | [
{
"aid": 1,
"atext": "Digestive trematode."
},
{
"aid": 2,
"atext": "Monogenetic trematode."
},
{
"aid": 3,
"atext": "Nematode"
},
{
"aid": 4,
"atext": "Platelminto."
},
{
"aid": 5,
"atext": "Arthropod."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 85 | The vector of tularemia is a / a: | 4 | [
{
"aid": 1,
"atext": "Coleoptera."
},
{
"aid": 2,
"atext": "Louse."
},
{
"aid": 3,
"atext": "Flea."
},
{
"aid": 4,
"atext": "Tick."
},
{
"aid": 5,
"atext": "Mosquito."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 86 | In general, viruses that have a naked capsid: | 1 | [
{
"aid": 1,
"atext": "They are stable against drying."
},
{
"aid": 2,
"atext": "They are commonly released from the host cell by budding."
},
{
"aid": 3,
"atext": "They are very sensitive to detergents."
},
{
"aid": 4,
"atext": "They are very sensitive to the conditions in the intestinal tract."
},
{
"aid": 5,
"atext": "They can not be neutralized by host antibodies."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 87 | The virion of retroviruses: | 4 | [
{
"aid": 1,
"atext": "It has helical shape."
},
{
"aid": 2,
"atext": "It has an icosahedral form."
},
{
"aid": 3,
"atext": "It contains a single copy of its genome."
},
{
"aid": 4,
"atext": "It contains two copies of its genome."
},
{
"aid": 5,
"atext": "It contains a segmented genome."
}
] |
Cuaderno_2014_1_B | 2014 | biology | 88 | The hepatitis B virus: | 4 | [
{
"aid": 1,
"atext": "It has circular double-stranded RNA as a genetic material."
},
{
"aid": 2,
"atext": "It has circular single-stranded RNA as a genetic material."
},
{
"aid": 3,
"atext": "It is transmitted by air."
},
{
"aid": 4,
"atext": "Encode a reverse transcriptase."
},
{
"aid": 5,
"atext": "It does not have tissue tropism."
}
] |
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