Which of the following are produced during the citric acid cycle?
A. ATP, NADH, and FADH2.
B. A proton gradient.
C. Pyruvate, ATP and NADH.
D. ATP and NAD+.
E. Oxygen.
A. ATP, NADH, and FADH2.
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Selection of culture media for specific specimens includes a variety of media for all of the following reasons except:
a. a nutritive media is included to insure growth of all potential pathogens. b. a selective media is often included to sup-press normal microbiota or other potential contaminating organisms. c. as enrichment media is utilized to cultivate organisms that do not grow on routine media. d. a back-up broth is included to provide in-oculum for additional testing.
The maximum volume of air that can be expired following a resting expiration is called
A) tidal volume. B) vital capacity. C) expiratory reserve volume. D) inspiratory reserve volume. E) inspiratory capacity.
"Bubbles" along a strand of DNA indicate that
A. DNA replication is occurring. B. RNA synthesis is taking place. C. transcription is occurring. D. All of these are possible.
Which of the following statements about the angiosperm embryo sac is false?
A. It is the gametophyte generation of the plant. B. The embryo sac nuclei are the product of mitotic division of a megaspore. C. The synergids flank the egg cell. D. It contains eight nuclei. E. The nuclei within the embryo sac are diploid.