A bacterial smear stained with a Gram's stain is best viewed using a
A. dark field microscope
B. light microscope
C. electron microscope
D. fluorescence microscope
E. phase contrast microscope
Answer: B. light microscope
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The key mediators of apoptosis are the ________.
Fill in the blank(s) with the appropriate word(s).
Adenine and guanine are
a. nitrogenous bases. b. base pairs bonded together in DNA. c. bases found only in RNA. d. waste products of protein synthesis. e. amino acids.
Bats, by emitting high-pitched sounds, can detect distant objects via:a
olfaction. b. echolocation. c. lateral line organs. d. sensory adaptation. e. ommatidia.
A drug is structurally similar to PABA and inhibits folic acid synthesis. It is most likely a(n)
A) nucleic acid analog. B) penicillin. C) tetracycline. D) azole. E) sulfonamide.