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null | Question: Interstitial carbides are produced by the reaction of most transition metals at high temperatures with what element?
Options:
A. oxygen
B. hydrogen
C. carbon
D. nitrogen
Answer: | C |
null | Question: What come together to create continents and supercontinents?
Options:
A. mountains
B. volcanic sediment
C. islands
D. microcontinents
Answer: | D |
null | Question: What are xylem and phloem responsible for transporting to the cells of leaves?
Options:
A. air and dirt
B. water and minerals
C. light and gas
D. water and blood
Answer: | B |
null | Question: What kind of core does mercury have?
Options:
A. dense metal
B. solid metal
C. gas
D. liquid metal
Answer: | D |
null | Question: Do most humans feed at one trophic level, or more than one?
Options:
A. more than one
B. less than one
C. one
D. none
Answer: | A |
null | Question: What type of molecules are found in the hydration shell of a dissolved ion?
Options:
A. carbon
B. oxygen
C. iron
D. water
Answer: | D |
null | Question: How many additional pairs of appendages do arachnids have?
Options:
A. 0
B. 6
C. 4
D. 2
Answer: | D |
null | Question: In the nematic phase, only the long axes of the molecules are parallel, and the ends are staggered at random intervals. in the smectic phase, the long axes of the molecules are parallel, and the molecules are also arranged in planes. finally, in thecholesteric phase, the molecules are arranged in layers; each layer is rotated with respect to the ones above and below it to give it this?
Options:
A. kinetic energy
B. layer structure
C. symmetry
D. spiral structure
Answer: | D |
null | Question: 8each cell-surface receptor has three main components: an external ligand-binding domain, a hydrophobic membrane spanning region, and a(n) what domain inside the cell?
Options:
A. molecular
B. intracellular
C. isolated
D. inocent
Answer: | B |
null | Question: What's the name for an organic compound in which halogen atoms are substituted for hydrogen in a hydrocarbon?
Options:
A. glucose
B. alcohol
C. alkyl halide
D. sodium halide
Answer: | C |
null | Question: The sun’s energy is converted to chemical energy by a what?
Options:
A. plant
B. amphibian
C. mammal
D. bacterium
Answer: | A |
null | Question: The volume of a gas is comprised of about 10% matter. what is the rest?
Options:
A. empty space
B. normal space
C. open space
D. instead space
Answer: | A |
null | Question: What monthy cycle causes changes in the ovaries and uterus?
Options:
A. the menstrual cycle
B. tides
C. sleep-wake cycle
D. water cycle
Answer: | A |
null | Question: Which material used in oxyacetylene torches helps cut and weld metals?
Options:
A. sulfur
B. carbon
C. acetylene
D. dioxide
Answer: | C |
null | Question: Gases such as co2 and methane can trap what energy in earth's atmosphere, before radiating it into space?
Options:
A. thermal energy
B. sunlight energy
C. potential energy
D. mechanical energy
Answer: | A |
null | Question: Alchemists, as early as the eighth century, knew nitric acid as aqua fortis, which means?
Options:
A. strong water
B. applied water
C. clean water
D. isolated water
Answer: | A |
null | Question: What is a measure of the change in velocity of a moving object?
Options:
A. inclination
B. acceleration
C. kinetic energy
D. vibration
Answer: | B |
null | Question: How do genes located on separate nonhomologous chromosomes sort?
Options:
A. intradependently
B. mechanically
C. typically
D. independently
Answer: | D |
null | Question: What are the two vibrating fields that electromagnetic waves consist of?
Options:
A. flammable and magnetic
B. radioactive and magnetic
C. electric and magnetic
D. magnetic and mechanical
Answer: | C |
null | Question: Like the mitochondria, chloroplasts have their own dna and ribosomes, but chloroplasts have an entirely different function. chloroplasts are plant cell organelles that carry out what?
Options:
A. growth
B. reproduction
C. photosynthesis
D. digestion
Answer: | C |
null | Question: What is the name of the simplest carbon molecule?
Options:
A. Buckminsterfullerine
B. methane
C. butane
D. graphite
Answer: | B |
null | Question: Cells in green algae divide along cell plates called what?
Options:
A. chloroplasts
B. phragmoplasts
C. xanthophylls
D. cellulose
Answer: | B |
null | Question: Viruses may damage or kill cells by causing the release of hydrolytic enzymes from where?
Options:
A. lysosomes
B. capillaries
C. lipids
D. glands
Answer: | A |
null | Question: The thalamus acts as a gateway to and from what?
Options:
A. pons
B. medulla oblongata
C. spine
D. cortex
Answer: | D |
null | Question: What is the term for environmental causes of mutations?
Options:
A. catalysts
B. pollutants
C. mutagens
D. carcinogens
Answer: | C |
null | Question: Puberty and other physical changes occurs during which stage of development?
Options:
A. adulthood
B. adolescence
C. childhood
D. infancy
Answer: | B |
null | Question: What occurs when a substance reacts quickly with oxygen?
Options:
A. oxidation
B. combustion reaction
C. convection
D. catalytic conversion
Answer: | B |
null | Question: Viruses depend on what type of cells?
Options:
A. blood cells
B. immune system cells
C. host cells
D. anchor cells
Answer: | C |
null | Question: When iron and sulfur are mixed together in a certain ratio and heated, what do they become?
Options:
A. iron oxide
B. rust
C. sulfuric acid
D. iron sulfide
Answer: | D |
null | Question: Which lymphoid organ is situated in the upper chest?
Options:
A. pancreas
B. thymus
C. spleen
D. thyroid gland
Answer: | B |
null | Question: In which state does matter need to be for nuclear fusion?
Options:
A. solid state
B. plasma state
C. gaseous state
D. cells state
Answer: | B |
null | Question: Does blood flow increase or decrease when blood vessels constrict?
Options:
A. it's not affected
B. it stops
C. decrease
D. increases
Answer: | C |
null | Question: Because collisions are ______, energy can be transferred between molecules during them.
Options:
A. preservative
B. elastic
C. conductive
D. inelastic
Answer: | B |
null | Question: What element do nuclear power plants use in fuel rods?
Options:
A. plutonium
B. uranium
C. magnesium
D. boron
Answer: | B |
null | Question: What class of oxygencontaining compounds is formed by the dehydration of alcohols?
Options:
A. reagents
B. sugars
C. nethers
D. ethers
Answer: | D |
null | Question: Red algae and green algae are the closest relatives of what?
Options:
A. transfer plants
B. arctic plants
C. land plants
D. water plants
Answer: | C |
null | Question: Does lava flow quickly or slowly when thick?
Options:
A. slowly
B. quickly
C. steadily
D. rapidly
Answer: | A |
null | Question: Which period after birth has the most rapid growth?
Options:
A. middle childhood
B. infancy
C. early childhood
D. adolescence
Answer: | B |
null | Question: What are living things that produce food for themselves and other organisms called?
Options:
A. growers
B. producers
C. refiners
D. harvesters
Answer: | B |
null | Question: What do ecosystems require constant inputs of?
Options:
A. Water
B. energy
C. fuel
D. heating
Answer: | B |
null | Question: The largest population size that can be supported in an area without harming the environment is referred to as what?
Options:
A. population shift
B. population density
C. carrying capacity
D. containing capacity
Answer: | C |
null | Question: The lifecycle of an ascomycete is characterized by the production of what during the sexual phase?
Options:
A. flageli
B. asci
C. abaci
D. cerci
Answer: | B |
null | Question: The sum of the pressures of the hydrogen and the water vapor is equal to what?
Options:
A. atmospheric pressure
B. adjacent pressure
C. moon pressure
D. precipitation pressure
Answer: | A |
null | Question: Sickle cell anemia is what type of disorder?
Options:
A. autosomal recessive disorder
B. nongenetic disorder
C. autosomal dominant disorder
D. spontaneous mutation
Answer: | A |
null | Question: Hydrogen peroxide is commonly sold as a 3% by volume solution for use as a what?
Options:
A. disinfectant
B. antiseptic
C. surfactant
D. detergent
Answer: | A |
null | Question: What is the name of a long and low hill of sediments which have been deposited by a glacier?
Options:
A. a floodplain
B. a mountain
C. a drumlin
D. a crag
Answer: | C |
null | Question: Transverse divisions are associated with leaf elongation, and longitudinal divisions are associated with what?
Options:
A. leaf shedding
B. leaf broadening
C. leaf coloring
D. leaf multiplying
Answer: | B |
null | Question: A changing magnetic field produces an electric current in what?
Options:
A. matter
B. organ
C. substance
D. a conductor
Answer: | D |
null | Question: The concentration of hydrogen ions in a solution is called?
Options:
A. alkalinity
B. moisture
C. acidity
D. alcohol
Answer: | C |
null | Question: Ponds and lakes are examples of what kind of biome?
Options:
A. standing liquid biome
B. standing lake biome
C. standing marine biome
D. standing freshwater biome
Answer: | D |
null | Question: What group of elements does sodium belong to?
Options:
A. noble gases
B. alkali metals
C. halogens
D. metalloids
Answer: | B |
null | Question: What type of speciation occurs when groups from the same species are geographically isolated for long periods?
Options:
A. asexual
B. allopatric
C. symbiotic
D. prokaryotic
Answer: | B |
null | Question: What type of cell layer do flatworms have?
Options:
A. epidermis
B. endoderm
C. cuticle
D. mesoderm
Answer: | D |
null | Question: Most of the trash in the ocean is made of what material?
Options:
A. styrofoam
B. plastic
C. hydrocarbons
D. wood
Answer: | B |
null | Question: What do nonvascular plants reproduce with?
Options:
A. vascular plants
B. spores
C. toxins
D. photosynthesis
Answer: | B |
null | Question: Which organisms capture light energy and convert it to chemical energy inside their cell?
Options:
A. sporozoans
B. phototrophs
C. pores
D. chloroplasts
Answer: | B |
null | Question: The strength of acids is measured on what scale?
Options:
A. qcd
B. μg
C. Killalot
D. ph
Answer: | D |
null | Question: Air quality is a measure of what in the air?
Options:
A. gases
B. pollutants
C. clouds
D. water
Answer: | B |
null | Question: The process in which the nucleus divides is called what?
Options:
A. meiosis
B. mitosis
C. cytokinesis
D. epistasis
Answer: | B |
null | Question: How do roots and stems grow?
Options:
A. logically
B. indeterminately
C. evenly
D. orderly
Answer: | B |
null | Question: What are a class of tetrapod vertebrates that produce amniotic eggs called?
Options:
A. reptiles
B. amphibians
C. mammals
D. insects
Answer: | A |
null | Question: Who lack some of the defining traits of chordates?
Options:
A. Childern
B. Reptiles
C. Adult Mammals
D. adult humans
Answer: | D |
null | Question: What kind of muscle is the heart mainly composed of?
Options:
A. cardiac muscle
B. idealized muscle
C. respiratory muscle
D. nerve muscle
Answer: | A |
null | Question: What essential molecules can be harmful if ingested in large amounts, especially if they contain saturated fatty acids from animal foods?
Options:
A. lipids
B. oxygen
C. helium
D. hydrogen
Answer: | A |
null | Question: Catecholamines are a class of amine hormones synthesised form which amino acid?
Options:
A. phenylalanine
B. epinephrine
C. dopamine
D. tyrosine
Answer: | D |
null | Question: What do we call a peptide hormone composed of nine amino acids that lowers blood pressure?
Options:
A. parcnid
B. bradykinin
C. bufotenin
D. angiotensin
Answer: | B |
null | Question: In fruit flies, all homeotic genes are found on one what?
Options:
A. site
B. genome
C. chromosome
D. enzymes
Answer: | C |
null | Question: What cycle is the second stage of cellular respiration?
Options:
A. glycolysis
B. krebs cycle
C. sodium potassium pump
D. electron transport chain
Answer: | B |
null | Question: Veins are blood vessels that carry blood toward what?
Options:
A. lung
B. heart
C. brain
D. extremities
Answer: | B |
null | Question: How many orders can flying birds be divided into?
Options:
A. 29
B. 44
C. 31
D. 19
Answer: | A |
null | Question: What is the property that determines the amount of current flow through a particular material?
Options:
A. pressure
B. surface tension
C. resistance
D. demand
Answer: | C |
null | Question: When land used for mining or other purposes is restored to its natural state, what do you call the process, which is often mandated by law?
Options:
A. urban renewal
B. irrigation
C. reclamation
D. removal
Answer: | C |
null | Question: Mutations cannot be passed on to offspring if they occur in what type of cells?
Options:
A. put cells
B. body cells
C. blood cells
D. kept cells
Answer: | B |
null | Question: Often determining the strength or intensity of a wave, this term is the distance from the equilibrium point of motion to either its lowest or highest point?
Options:
A. density
B. amplitude
C. peak
D. frequency
Answer: | B |
null | Question: What evolved, adapted response to resource availability is the long-range seasonal movement of animals?
Options:
A. changing
B. Stagnation
C. migration
D. regulating
Answer: | C |
null | Question: What do you call nutrients that your body needs in fairly large amounts?
Options:
A. antioxidants
B. B-complex
C. super foods
D. macronutrients
Answer: | D |
null | Question: How can natural resources be classified from a human point of view?
Options:
A. renewable or nonrenewable
B. recyclable or reusable
C. renewable or reversible
D. present or nonrenewable
Answer: | A |
null | Question: A hookworm is classified as what type of organism?
Options:
A. predator
B. bacterium
C. virus
D. parasite
Answer: | D |
null | Question: What type of roads and parking lots prevent rainwater from soaking into the ground?
Options:
A. dirt
B. shaded
C. paved
D. gravel
Answer: | C |
null | Question: What do electrons lose during their transfer from organic compounds to oxygen?
Options:
A. mechanical energy
B. potential energy
C. thermal energy
D. actual energy
Answer: | B |
null | Question: What branch of science is the study of the universe, not of cosmetics?
Options:
A. cosmology
B. epistemology
C. theology
D. astronomy
Answer: | A |
null | Question: What makes up most of the inside of a plant?
Options:
A. mitochondria
B. ground tissue
C. animal tissue
D. star tissue
Answer: | B |
null | Question: Does overhead irrigation or drip irrigation use less water?
Options:
A. drip irrigation
B. stream irrigation
C. constant flow
D. mist irrigation
Answer: | A |
null | Question: What evolutionary process may affect the distribution of a polygenic trait?
Options:
A. characteristic selection
B. artificial selection
C. flow selection
D. natural selection
Answer: | D |
null | Question: What are groups of tens to hundreds of thousands of stars held tightly together by gravity called?
Options:
A. elongated clusters
B. elliptical clusters
C. galaxy
D. globular clusters
Answer: | D |
null | Question: Where does most water evaporate from?
Options:
A. lakes
B. oceans
C. rivers
D. seas
Answer: | B |
null | Question: What is performed to identify disease-causing genes?
Options:
A. genetic testing
B. bioremediation
C. inoculation
D. ultrasound
Answer: | A |
null | Question: With a shape that specially suits its function of sending nerve signals to other cells, the human nerve cell is an example of what?
Options:
A. evolution
B. adaptation
C. maturation
D. specialization
Answer: | D |
null | Question: When vascular disease causes stiffening of arteries, compliance is reduced and resistance to blood flow is increased. the result is more turbulence, higher pressure within the vessel, and reduced blood flow. this increases the work of this?
Options:
A. lung
B. heart
C. brain
D. muscles
Answer: | B |
null | Question: The volume of a regularly shaped solid can be calculated from its what?
Options:
A. density
B. mass
C. dimensions
D. layers
Answer: | C |
null | Question: By what processes do rivers create floodplains?
Options:
A. thrust and deposition
B. deposition and sedimentation
C. depletion and erosion
D. erosion and deposition
Answer: | D |
null | Question: What is written as systolic over diastolic?
Options:
A. blood pressure
B. brain pressure
C. fractional pressure
D. blood position
Answer: | A |
null | Question: When a soluble compound dissolves, its constituent atoms, molecules, or ions disperse throughout what?
Options:
A. gel
B. pigment
C. solvent
D. liquid
Answer: | C |
null | Question: Purkinje fibers have a fast inherent what?
Options:
A. electromagnetic rate
B. conduction rate
C. replication rate
D. induction rate
Answer: | B |
null | Question: What term means an area where two closely related species continue to interact and reproduce?
Options:
A. heterozone
B. hybrid zone
C. homozone
D. common zone
Answer: | B |
null | Question: What does a solar power plant turn sunlight into?
Options:
A. machinery
B. mechanical energy
C. electricity
D. batteries
Answer: | C |
null | Question: The tidal forces near what celestial phenomena are so great they can actually tear matter from a companion star?
Options:
A. wormholes
B. black holes
C. dwarf star
D. large holes
Answer: | B |
null | Question: What type electrical circuits have multiple paths the current may take?
Options:
A. parallel
B. perpendicular
C. serial
D. single loop
Answer: | A |
null | Question: Humans are unique in their ability to alter their environment with the conscious purpose of increasing what, which acts as a limiting factor on populations in general?
Options:
A. carrying capacity
B. density dependent limitation
C. niche
D. containing capacity
Answer: | A |
null | Question: What is the structure in a diploid sporophyte that undergoes meiosis to form haploid spores?
Options:
A. hyphae
B. hymenium
C. dikaryotic
D. sporangium
Answer: | D |