Bioassays
(a) are performed in a test tube using killed cells.
(b) expose a population of living organisms to a test substance.
(c) are used for chemotherapy.
(d) are none of the above.
(b) expose a population of living organisms to a test substance.
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Membrane proteins serve many functions. One of the functions is transportation of substances across the membrane. If a cell biologist placed cells into an environment in which a chemical has been added that blocks the function of only carrier proteins, the process that will be affected is
A. active transport. B. osmosis. C. simple diffusion. D. phagocytosis. E. pinocytosis.
Ricin is internationally considered as a
weapon. Its use is now banned in most countries according to the ____.
a. Madrid protocol. b. Paris protocol. c. Kyoto protocol. d. Geneva protocol. e. Vienna protocol
By evaluating and selecting mates with superior qualities, an animal can increase its
A. reproductive success. B. learning. C. competitive strategies. D. foraging efficiency. E. length of life.
Genes are physically located within ______.
A. chromosomes B. centrosomes C. kinetochores D. microtubules