One way to produce a vaccine is to heat a virus or bacteria and then inject the inactive pathogen as a vaccination. How would the heat inactivate a virus?
A. by inhibiting its metabolism
B. by destroying the membrane
C. by blocking facilitated diffusion
D. by denaturing proteins
E. All of the answer choices are correct.
D. by denaturing proteins
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8. The copulatory organ of the earthworm is the
(a) penis. (b) clitellum. (c) gonopodium. (d) vestibule.
Which of the following statements best describes the role of NAD+/NADH in glycolysis?
A) NADH is used to produce energy by directly creating the phosphoanhydride bonds in ATP. B) NAD+ is used to carry electrons. C) NADH is capable of pumping ions during glycolysis. D) NADH is used primarily in substrate-level phosphorylation. E) all of the above
Two species of cattail (Typha) live in shallow water along the shoreline of ponds. Although T. agustifolia can live by itself in water 0-20 cm deep, in the presence of T. latifolia, it occurs only in water > 20 cm deep, whereas T
latifolia occurs in shallower water. In this example, T. agustifolia is limited by competition exploiting its A) ecological niche. B) fundamental niche. C) realized niche. D) physiological niche.
Why does taking antibacterial medications put women at risk for candidiasis?
A) Antibacterials can alter metabolism, creating conditions that favor the growth of Candida albicans. B) Antibacterials deplete the normal bacterial microbiota, resulting in a change of pH. C) Antibacterials serve as growth stimulants for Candida albicans. D) Bacteria killed by antibacterials provide nutrients for Candida albicans. E) Depletion of the bacterial microbiota results in higher carbon dioxide levels, (which favor the growth of Candida albicans).