How do some bacteria respond to adverse environmental conditions?
a. Bacteria shrink in size.
b. Bacteria form endospores.
c. Bacteria release exotoxins.
d. Bacteria develops a cyst and fills it with fluid.
e. Bacteria build up more protein in their capsules.
b
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The progressive accumulation of toxins such as DDT in higher trophic levels is known as
a. biological magnification. b. toxic ascension. c. metabolic compensation. d. tolerance deficit. e. secondary productivity.
The most important ion in controlling the movement of water into and out of the guard cells is
A. hydrogen. B. carbon. C. nitrogen. D. sodium. E. potassium.
Explain how proteins can be metabolized by the same pathways that oxidize glucose. What will be an ideal response?
Reye's syndrome involves
A. aspirin use. B. children, adolescents, and young adults. C. fatty degeneration of liver, brain, kidney. D. a febrile viral illness such as influenza or chickenpox. E. All of the choices are correct.