Bacteria of the Proteobacteria that are intracellular parasites are members of the
A. alphaproteobacteria.
B. betaproteobacteria.
C. gammaproteobacteria.
D. alphaproteobacteria and betaproteobacteria.
E. alphaproteobacteria and gammaproteobacteria.
Answer: E
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The human oral flora consists of
A) a small group of phylogenetically related aerobic microorganisms. B) diverse aerobic and anaerobic microorganisms. C) monoculture biofilms on tooth surfaces. D) the same phyla that are found in the human gut.
A collapsed lung occurs when the pressure in the ____
a. atmosphere increases b. alveoli increases c. pleural cavity increases d. trachea increases e. bronchioles decreases
The impact of a large meteorite with Earth would have most likely caused mass extinctions by
A. causing a great prolonged rise in the earth's temperature and destroying plant life. B. creating large clouds of dust that blocked out sunlight only. C. causing a great prolonged rise in the earth's temperature only. D. creating large clouds of dust that blocked out sunlight and destroying plant life. E. destroying plant life on Earth only.
What would be required for the last product of glycolysis, pyruvate, to enter the Krebs cycle?
A. more glucose for energy B. oxygen C. ATP D. carbon dioxide