The acid-fast stain
A. reflects differences in cytoplasmic membrane structure.
B. is useful for distinguishing a small group of organisms, including Mycobacterium.
C. uses crystal violet and safranin.
D. uses carbolfuchsin and methylene blue.
E. is useful for distinguishing a small group of organisms, including Mycobacterium AND uses carbolfuchsin and methylene blue.
E
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Bacterial chromosomes are always circular DNA molecules.
Answer the following statement true (T) or false (F)
Natural selection is the inevitable consequence of:
a. variation. c. differential reproductive success. b. inheritance. d. All of the above.
The force generated by a muscle contraction depends on:
A. all of the answer options provided. B. the size of the muscle. C. the number of fibers in the muscle. D. speed of contraction. E. contraction length.
Which of the following is not true of fluorescent in situ hybridization (FISH)?
A. It can be used to identify unknown bacteria without culturing. B. It can be used to detect RNA in cells. C. Probes can locate genes on chromosomes. D. It uses electrophoresis to separate the DNA. E. Probes can be applied to intact cells.