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Regents Review Quiz
Regents Review Quiz
1) Diagrams, tables, and graphs are used by scientists mainly to
a) design a research plan for an experiment
b) test a hypothesis
c) organize data
d) predict the independent variable
2) A scientist tested a hypothesis that white-tailed deer would prefer apples over corn as a primary food source. The findings of the test, in which the scientist claimed that the deer preferred apples, were published. Which research technique, if used by the scientist, might result in this claim being questioned?
a) The scientist observed four deer in different locations at various times of the day.
b) The scientist observed a total of 500 deer in 20 different locations at various times of the day.
c) The scientist observed 200 deer in various natural settings, but none in captivity.
d) The scientist observed 300 deer in various locations in captivity, but none in natural settings.
3) What happens to certain nutrient molecules after they pass into muscle cells?
a) They are replicated in the nucleus.
b) They are acted on by enzymes and release the energy they contain.
c) They are changed into tissues and organs in the cytoplasm.
d) They enter chloroplasts, where they can absorb light energy.
4)A medical test indicates that a patient has a defective protein. This condition is most likely due to a change in the directions coded in the
a) number of hydrogen atoms in starch molecules
b) sequence of inorganic molecules
c) number of carbon atoms in sugar molecules
d) sequence of subunits in DNA
5) If a human system fails to function properly, what is the most likely result?
a) a stable rate of metabolism
b) a disturbance in homeostasis
c) a change in the method of cellular respiration
d) a change in the function of DNA
6) Which statement regarding the functioning of the cell membrane of all organisms is not correct?
a) The cell membrane forms a boundary that separates the cellular contents from the outside environment.
b) The cell membrane is capable of receiving and recognizing chemical signals.
c) The cell membrane forms a barrier that keeps all substances that might harm the cell from entering the cell.
d) The cell membrane controls the movement of molecules into and out of the cell.
7) In multicellular organisms, cells must be able to communicate with each other. Structures that enable most cells to communicate with each other are known as
a) pathogenic agents
b) chloroplasts
c) antibiotics
d) receptor molecules
8) Every single-celled organism is able to survive because it carries out
a) metabolic activities
b) autotrophic nutrition
c) heterotrophic nutrition
d) sexual reproduction
9) The shape of a protein molecule is influenced by
a) whether it is organic or inorganic
b) the sequence of amino acids in it
c) the number of genes found in the nucleus
d) the number of chromosomes in the cell
10) Many diabetics are now using insulin that was made by certain bacteria. The ability of these bacteria to produce insulin was most likely the result of
a) deleting many DNA segments from bacterial DNA
b) genetic mapping of bacterial DNA to activate the gene for insulin production
c) inserting a portion of human DNA into the ring-shaped DNA of bacteria
d) using radiation to trigger mutations
11) Which situation would most directly affect future generations naturally produced by a maple tree?
a) Ultraviolet radiation changes the DNA sequence within some leaves of the tree.
b) Ultraviolet radiation changes the DNA sequence within the gametes of some flowers of the tree.
c) An increase in temperature reduces the number of cell divisions in the roots.
d) Rapidly growing cells just under the bark are exposed to radiation, causing changes in genetic material.
12) Which statement is best supported by fossil records?
a) Many organisms that lived in the past are now extinct.
b) Species occupying the same habitat have identical environmental needs.
c) The struggle for existence between organisms results in changes in populations.
d) Structures such as leg bones and wing bones can originate from the same type of tissue found in embryos.
13) The first life-forms to appear on Earth were most likely
a) complex single-celled organisms
b) complex multicellular organisms
c) simple single-celled organisms
d) simple multicellular organisms
14) One explanation for the variety of organisms present on Earth today is that over time
a) new species have adapted to fill available niches in the environment
b) evolution has caused the appearance of organisms that are similar to each other
c) each niche has changed to support a certain variety of organism
d) the environment has remained unchanged, causing rapid evolution
15) Within which structure in the human body does specialization of parts of the developing baby take place?
a) ovary
b) u t e r u s
c) testis
d) pancreas
16)Which statement best explains the significance of meiosis in the process of evolution within a species?
a) The gametes produced by meiosis ensure the continuation of any particular species by asexual reproduction.
b) Equal numbers of eggs and sperm are produced by meiosis.
c) Meiosis produces eggs and sperm that are alike.
d) Meiosis provides for variation in the gametes produced by an organism.
17) During the last months of pregnancy, the brain of a human embryo undergoes an essential "growth spurt. Which action by the mother would most likely pose the greatest threat to the normal development of the nervous system of the embryo at this time?
a) spraying pesticides in the garden
b) taking prescribed vitamins on a daily basis
c) maintaining a diet high in fiber and low in fat
d) not exercising
18) Which phrase best describes cellular respiration, a process that occurs continuously in the cells of organisms?
a) removal of oxygen from the cells of an organism
b) conversion of light energy into the chemical bond energy of organic molecules
c) transport of materials within cells and throughout the bodies of multicellular organisms
d) changing of stored chemical energy in food molecules to a form usable by organisms
19) Eating a sweet potato provides energy for human metabolic processes. The original source of this energy is the energy
a) in protein molecules stored within the potato
b) from starch molecules absorbed by the potato plant
c) made available by photosynthesis
d) in vitamins and minerals found in the soil
20) Which statement does not identify a characteristic of antibodies?
a) They are produced by the body in response to the presence of foreign substances.
b) They may be produced in response to an antigen.
c) They are nonspecific, acting against any foreign substance in the body.
d) They may be produced by white blood cells.
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