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null | Question: Conifers are the dominant phylum of gymnosperms, with the most variety of species. most are tall trees that usually bear scale-like or needle-like leaves. the thin shape of the needles and their waxy cuticle limits water loss through this?
Options:
A. evaporation
B. sedimentation
C. transpiration
D. transportation
Answer: | C |
null | Question: What forms when an atom gains electrons?
Options:
A. cations
B. anions
C. bonds
D. crystals
Answer: | B |
null | Question: What can often be used to measure distance?
Options:
A. graphs
B. histograms
C. maps
D. models
Answer: | C |
null | Question: What type of chemistry is the study of chemicals containing carbon called?
Options:
A. biochemistry
B. bioanalytical chemistry
C. inorganic chemistry
D. organic chemistry
Answer: | D |
null | Question: The speed of a particle in what state is directly proportional to the temperature of the system?
Options:
A. gas
B. solid
C. liquid
D. frozen
Answer: | A |
null | Question: What is the remarkable ring of light around the sun called?
Options:
A. panorama
B. laguna
C. corona
D. magnetic halo
Answer: | C |
null | Question: The sympathetic division of the vertebrate autonomic nervous system has evolved the fight-or-flight response to counter stress-induced disruptions of this?
Options:
A. homeostasis
B. blood pressure
C. body temperature
D. equilibrium
Answer: | A |
null | Question: How many directions can ions flow along the axon?
Options:
A. one
B. three
C. six
D. two
Answer: | A |
null | Question: Electric generators change kinetic energy to what type of energy?
Options:
A. electrical
B. light
C. intrinsic
D. thermal
Answer: | A |
null | Question: What is it that surrounds cells and serve to keep the insides separated from the outsides?
Options:
A. inner membranes
B. biological membranes
C. abundant membranes
D. similar membranes
Answer: | B |
null | Question: The pituitary gland is called the “master gland” of what system?
Options:
A. nervous
B. digestive
C. hormonal
D. endocrine
Answer: | D |
null | Question: Living things that use energy to make food, both for themselves and other living things, are what part of an ecosystem?
Options:
A. consumers
B. growers
C. decomposers
D. producers
Answer: | D |
null | Question: Astronomers have wondered if the universe is expanding fast enough to escape the pull of what?
Options:
A. Coreolis effect
B. gravity
C. light
D. kinetic energy
Answer: | B |
null | Question: What kind of reaction is needed to prepare amides?
Options:
A. amino acid reaction
B. carboxylic acid reaction
C. oxidize acid reaction
D. lipophilic acid reaction
Answer: | B |
null | Question: What occurs when groups from the same species stop mating because of something other than physical or geographic separation?
Options:
A. sympatric speciation
B. extinction
C. complementary speciation
D. invasive speciation
Answer: | A |
null | Question: Heterotrophic organisms use organic compounds, usually from other organisms, as a source of what basic element of life?
Options:
A. oxygen
B. carbon
C. hydrogen
D. monoxide
Answer: | B |
null | Question: The muscular layer is much thicker in which ventricle of the heart?
Options:
A. right
B. upper
C. middle
D. left
Answer: | D |
null | Question: What is the raw material for evolution by natural selection called?
Options:
A. genetic variation
B. comparable variation
C. pattern variation
D. mutation
Answer: | A |
null | Question: Oils are liquid lipids that plants use for storage of what?
Options:
A. glucose
B. fat
C. energy
D. oxygen
Answer: | C |
null | Question: Renal plasma flow equals the blood flow per minute times the what?
Options:
A. leukocytes
B. erythrocytes
C. hemoglobin
D. hematocrit
Answer: | D |
null | Question: How many chambers does a mammalian heart have?
Options:
A. one
B. three
C. four
D. five
Answer: | C |
null | Question: Vascular disorders involve problems with the flow of what?
Options:
A. blood
B. saliva
C. bacteria
D. mucus
Answer: | A |
null | Question: What part of the continuous dermal tissue system covers stems?
Options:
A. cuticle
B. dermis
C. callus
D. epidermis
Answer: | D |
null | Question: The energy in sunlight is also known as what kind of energy?
Options:
A. potential energy
B. kinetic energy
C. solar energy
D. geothermal energy
Answer: | C |
null | Question: What is a solid particle that is indestructible?
Options:
A. neutron
B. nucleus
C. atom
D. quark
Answer: | C |
null | Question: What term describes scientists who debate the origin of the earliest plants?
Options:
A. archaebotanists
B. protobotanists
C. specialists
D. paleobotanists
Answer: | D |
null | Question: Most of a mushroom's surface area is actually where?
Options:
A. air
B. underwater
C. hidden
D. underground
Answer: | D |
null | Question: At what age is skeletal maturity reached by humans?
Options:
A. 15
B. 30
C. 40
D. 20
Answer: | D |
null | Question: Nitrogen is a very important element to living things, because it is part of nucleotides and amino acids that are the building blocks of nucleic acids and these?
Options:
A. cells
B. proteins
C. lipids
D. follicles
Answer: | B |
null | Question: What type of cells are gametes?
Options:
A. cardiac
B. proteins
C. reproductive
D. immune
Answer: | C |
null | Question: What term describes the sequential appearance and disappearance of species in a community over time after a severe disturbance?
Options:
A. succession
B. supression
C. generational replacement
D. pattern
Answer: | A |
null | Question: The basal forebrain contains what that are important in learning and memory?
Options:
A. nuclei
B. oxygen
C. ribosomes
D. atoms
Answer: | A |
null | Question: The heart is an organ in which system?
Options:
A. nervous system
B. circulatory system
C. immune system
D. respiratory system
Answer: | B |
null | Question: What is the name of the cloud where most long-period comets come from?
Options:
A. bulge cloud
B. stellar cloud
C. oort cloud
D. volt cloud
Answer: | C |
null | Question: What element is typically used to shield things from gamma rays?
Options:
A. gold
B. silver
C. aluminum
D. lead
Answer: | D |
null | Question: What are the two classifications for organisms living in water?
Options:
A. arctan and nekton
B. nekton and plankton
C. scharwenka and plankton
D. arctan and plankton
Answer: | B |
null | Question: What is a thick, dark brown or black liquid found in rock layers of the earth's crust?
Options:
A. oil
B. propane
C. fossil fuel
D. coal
Answer: | A |
null | Question: Individual nucleotides can be linked together through their phosphate groups to form?
Options:
A. nitrous acid polymers
B. nucleic acid polymers
C. dna
D. atoms
Answer: | B |
null | Question: Ecology, botany, and zoology are what type of science?
Options:
A. life science
B. psychological sciences
C. chemistry
D. physical sciences
Answer: | A |
null | Question: A phospholipid is a bond between the glycerol component of a lipid and what else?
Options:
A. chlorine molecule
B. elemental molecule
C. oxygen molecule
D. phosphorous molecule
Answer: | D |
null | Question: What phenomenon, crucial for evolution, creates new genetic variation in a gene pool and is how all new alleles first arise?
Options:
A. natural selection
B. adaptation
C. mutation
D. radiation
Answer: | C |
null | Question: Why did people stop adding lead to gasoline?
Options:
A. explosions
B. bad smell
C. to expensive
D. environmental pollution
Answer: | D |
null | Question: Experiments have shown that acceleration is exactly inversely proportional to mass, just as it is exactly linearly proportional to what?
Options:
A. speed
B. kinetic energy
C. net internal force
D. net external force
Answer: | D |
null | Question: What increases in processes in which solid or liquid reactants form gaseous products and when solid reactants form liquid products?
Options:
A. evaporation
B. entropy
C. respiration
D. glucose
Answer: | B |
null | Question: Producing sperm and secreting testosterone are the main functions of what system?
Options:
A. male reproductive system
B. endocrine system
C. pollination
D. female reproductive system
Answer: | A |
null | Question: What connects the fetus to the placenta?
Options:
A. womb
B. umbilical cord
C. amniotic sac
D. fallopian tube
Answer: | B |
null | Question: The hemisphere that is tilted away from the sun is cooler because it receives less what?
Options:
A. x-rays
B. pollution
C. direct electrons
D. direct rays
Answer: | D |
null | Question: Pressure and vibration are examples of what type of stimuli?
Options:
A. chemical
B. thermal
C. physical
D. atmospheric
Answer: | C |
null | Question: What do you call electrons that form bonds with other elements in compounds and generally determine the properties of elements?
Options:
A. shell electrons
B. ionic electrons
C. valence electrons
D. isotopes
Answer: | C |
null | Question: Stem cells are unspecialized cells that can reproduce themselves via cell division, sometimes after years of inactivity. under certain conditions, they may differentiate into tissue-specific or organ-specific cells with special these?
Options:
A. chromosomes
B. functions
C. mutations
D. enzymes
Answer: | B |
null | Question: What is another name for nearsightedness?
Options:
A. myopia
B. astigmatism
C. hyperopia
D. presbyopia
Answer: | A |
null | Question: Low-level exposure of humans to radiation can cause what?
Options:
A. coughing
B. bleeding
C. cancer
D. illness
Answer: | C |
null | Question: What is the name of the thin layer that acts as a boundary between the stratosphere and the mesosphere?
Options:
A. stratopause
B. spicule
C. ozone layer
D. spirogyra
Answer: | A |
null | Question: Chloroplasts, leucoplasts and chromoplasts are found in what type of cells?
Options:
A. nitrogen cells
B. animal cells
C. man-made cells
D. plant cells
Answer: | D |
null | Question: What characteristic of the endothelium structure minimizes resistance to the flow of blood?
Options:
A. liquid surface
B. transition surface
C. uneven surface
D. smooth surface
Answer: | D |
null | Question: Water and chemical elements that organisms need keep recycling through biogeochemical what?
Options:
A. mutations
B. cycles
C. levels
D. effects
Answer: | B |
null | Question: Motion of water molecules helps break up interactions between what?
Options:
A. solid ions or molecules
B. enzymes and acids
C. ions or hormones
D. acids and bases
Answer: | A |
null | Question: Water is a versatile solvent that can dissolve many ionic and polar molecular solutes to make what?
Options:
A. aqueous solutions
B. chloride solutions
C. sulfide solutions
D. sulfate solutions
Answer: | A |
null | Question: Caffeine is an example of what type of drug?
Options:
A. depressant
B. nicotine
C. psychoactive
D. barbiturate
Answer: | C |
null | Question: What the name of the disease where some of the alveoli of the lungs fill with fluid so they can no longer exchange gas?
Options:
A. emphysema
B. lung cancer
C. leukemia
D. pneumonia
Answer: | D |
null | Question: What are small organelles and are the site of protein synthesis called.
Options:
A. chloroplasts
B. ribosomes
C. chromosomes
D. chromosomes
Answer: | B |
null | Question: The number, size, shape, and banding pattern of chromosomes make them easily identifiable in a what?
Options:
A. karyogram
B. nanocyte
C. spirogyra
D. xerophyte
Answer: | A |
null | Question: What is it in bone marrow transplants that may cause a graft versus host reaction?
Options:
A. lymphocytes
B. tumors
C. neutrophils
D. cancer
Answer: | A |
null | Question: An important chemical compound, which supplies living things with the energy they need to survive, is composed of carbon, oxygen and atoms of what other element?
Options:
A. magnesium
B. nitrogen
C. hydrogen
D. calcium
Answer: | C |
null | Question: How high or low a sound seems is associated with what property of the sound?
Options:
A. pitch
B. wavelength
C. decibel
D. frequency
Answer: | A |
null | Question: What disease occurs when the cell cycle is no longer regulated?
Options:
A. allergy
B. schizophrenia
C. malnutrition
D. cancer
Answer: | D |
null | Question: What is a process that changes some chemical substances into other chemical substances?
Options:
A. a chemical reaction
B. spontaneous mutation
C. a bio reaction
D. cellular respiration
Answer: | A |
null | Question: Haumea, which is the third brightest kuiper belt object has an odd oval shape which is probably caused by what?
Options:
A. unusually rapid rotation
B. particularly rapid rotation
C. Slow rotation
D. extremely rapid rotation
Answer: | D |
null | Question: What is the type of cell division that produces gametes called?
Options:
A. electrolysis
B. meiosis
C. mitosis
D. fertilization
Answer: | B |
null | Question: What term describes a collection of similar cells that had a common embryonic origin?
Options:
A. nucleus
B. organ-level organization
C. tissue
D. plasma
Answer: | C |
null | Question: The particles in a colloid are large enough to scatter light, a phenomenon called what?
Options:
A. astral effect
B. bowman effect
C. tyndall effect
D. jonah effect
Answer: | C |
null | Question: What type of animals breathe with gills as larvae and with lungs as adults?
Options:
A. mammals
B. amphibians
C. insects
D. reptiles
Answer: | B |
null | Question: What chemical affects the onset of puberty and duration?
Options:
A. acids
B. hormones
C. steroids
D. enzymes
Answer: | B |
null | Question: What do you call a compound that contains both an amino group and a carboxyl group in the same molecule?
Options:
A. compound acid
B. amino acid
C. carbolic acid
D. catalyst
Answer: | B |
null | Question: What oily substance prevents the hair and skin of living things from drying out?
Options:
A. pancreatic enzymes
B. sebum
C. progesterone
D. pus
Answer: | B |
null | Question: What term means controlling body temperature within a narrow range from the inside through biochemical or physical means?
Options:
A. regulation
B. evaporation
C. exothermy
D. endothermy
Answer: | D |
null | Question: How long ago did the ancestors of mammals evolve?
Options:
A. 300 million years
B. 10 million
C. 100 million
D. 50,900 million years
Answer: | A |
null | Question: Saturated and unsaturated are the two main kinds of what?
Options:
A. fats
B. polymers
C. sugars
D. acids
Answer: | A |
null | Question: Energy transferred solely due to a temperature difference is called?
Options:
A. chemical energy
B. magnetic energy
C. humidity
D. heat
Answer: | D |
null | Question: Are ecotones wide or narrow?
Options:
A. narrow
B. somewhere in between
C. wide
D. can be both
Answer: | D |
null | Question: What type of drugs can increase water loss by interfering with the recapture of solutes and water from the forming urine?
Options:
A. diuretics
B. sedatives
C. disassociates
D. hallucinogens
Answer: | A |
null | Question: What organ lets us understand what we see, hear, or sense in other ways, and allows us to use language, learn, think, and remember?
Options:
A. bone
B. heart
C. brain
D. Kidneys
Answer: | C |
null | Question: What is the least dangerous radioactive decay?
Options:
A. beta decay
B. zeta decay
C. gamma decay
D. alpha decay
Answer: | D |
null | Question: If an air mass forms over an ocean it is called what type of air mass?
Options:
A. cumulus
B. maritime
C. hurricane
D. tropical
Answer: | B |
null | Question: What is a sac-like organ at the end of the esophagus?
Options:
A. spleen
B. larynx
C. appendix
D. the stomach
Answer: | D |
null | Question: Functional groups are groups of atoms that occur within molecules and confer specific chemical properties to those molecules. they are found along the “carbon backbone” of what?
Options:
A. inorganic molecules
B. functional molecules
C. micromolecules
D. macromolecules
Answer: | D |
null | Question: Carbon dioxide molecules consist of a central carbon atom bonded to how many oxygen atoms?
Options:
A. two
B. one
C. four
D. three
Answer: | A |
null | Question: Earthquakes at convergent plate boundaries mark the location of the what?
Options:
A. shorting lithosphere
B. subducting lithosphere
C. abducting lithosphere
D. speeding lithosphere
Answer: | B |
null | Question: What does hypoxic mean?
Options:
A. standard oxygen level
B. higher oxygen
C. low oxygen
D. Oxygen rate
Answer: | C |
null | Question: What causes waves to bring sand up onto the beach during summers?
Options:
A. low sand density
B. low energy
C. no energy
D. high energy
Answer: | B |
null | Question: An example of beta decay is the emission of an electron by a carbon-14 what?
Options:
A. nucleus
B. protons
C. ion
D. molecules
Answer: | A |
null | Question: What gas comprises about three-fourths of earth's atmosphere?
Options:
A. oxygen
B. carbon dioxide
C. nitrogen
D. hydrogen
Answer: | C |
null | Question: What type of behavior is most flexible?
Options:
A. reflex behavior
B. adaptation
C. innate behavior
D. learned behavior
Answer: | D |
null | Question: What is the term for a change in the inherited traits of organisms over time?
Options:
A. emergence
B. mutation
C. generation
D. evolution
Answer: | D |
null | Question: What fertilizes an egg during sexual reproduction?
Options:
A. gametes
B. cytoplasm
C. mucus
D. sperm
Answer: | D |
null | Question: What is crucial for the fermentation progress in making bread?
Options:
A. fruit
B. cold
C. larvae
D. yeast
Answer: | D |
null | Question: What mineral is used in jewelry because of its striking greenish-blue color?
Options:
A. lime
B. glass
C. turquoise
D. aqua
Answer: | C |
null | Question: All cells need what for processes like active transport?
Options:
A. hydrogen
B. oxygen
C. sunlight
D. energy
Answer: | D |
null | Question: Through which artery does blood enter the kidneys?
Options:
A. renal artery
B. cerebral artery
C. thoracic artery
D. jugular
Answer: | A |
null | Question: Where in the female body does egg production take place?
Options:
A. ovaries
B. testes
C. endometrium
D. uterus
Answer: | A |
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