The microscope best for viewing living cells at low levels of magnification is the electron microscope.
a. true
b. false
a. true
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Which of the following statements best describes the habitats of Vibrio spp., Aeromonas spp., Plesiomonas shigelloides, and Chromobacterium violaceum?
a. Habitats are limited to the upper respira-tory tract of various mammals. b. Habitats are limited to the gastrointestinal tract. c. Habitats are mostly soil and water envi-ronment. d. Habitats are limited mostly to soil.
During the citric acid cycle, each acetyl group entering the cycle yields:a
1 ATP, 2 NADH, and 3 FADH2.
b. 1 ATP, 3 NADH, and 1 FADH2. c. 3 ATP, 2 NADH, and 1 FADH2. d. 4 ATP, 2 NADH, and 1 FADH2. e. 1 ATP, 2 NADH, and 4 FADH2.
Which vertebrate group is the most diverse?
A) Actinistia B) Actinopterygii C) Mammalia D) Chondrichthyes E) Reptilia
If neutral mutations occur at the rate of 0.000005 per individual, the rate of substitu-tions in that population will equal:
a. 2Ne*0.000005. b. (1/2Ne)*0.000005. c. 2Nek?*0.000005. d. 0.000005. e. None of the above.