Differential selection and reproduction of phenotypes occurs during a process called
A) cellular differentiation.
B) evolution.
C) growth.
D) transformation.
Answer: B
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Which of the following statements about antibody-mediated immunity is CORRECT?
A. It primarily defends against viruses that have already infected cells. B. It is responsible for transplant tissue rejection. C. It protects the body against cells that become cancerous. D. It defends against parasites, bacteria, and viruses. E. It primarily defends against bacteria that have already infected cells.
In the cell cycle, controlled degradation of regulatory proteins occurs via the
A) P450 - protease pathway. B) cyclin proteolysis pathway. C) ubiquitin-proteosome pathway. D) kinase inhibition pathway. E) none of the above
The central nervous system includes only ________
a. the brain and spinal cord b. afferent axons that carry sensory signals into the brain c. efferent axons that relay commands from the brain and spinal cord d. nerves that extend outside the brain and spinal cord
All of the following are major categories of microbial control methods except
A. genetic methods. B. mechanical removal methods. C. physical agents. D. chemical agents.