A taxon that includes only birds and bats, two clades of vertebrates capable of flight, is considered ____
a. paraphyletic
b. polyphyletic
c. monophyletic
d. complete
e. incomplete
ANSWER: b
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During translation in prokaryotes, formation of the initiation complex requires all of the following except
A. a small ribosomal subunit. B. mRNA. C. tRNA charged with N-formylmethionine. D. RNA polymerase. E. initiation factors.
Why would streptomycete bacteria be of particular interest to a pharmaceutical company? (Select all correct choices.)
A. Streptomycete bacteria produce antibiotic or anti-fungal-like compounds. B. All streptomycete bacteria are antibioticresistant. C. Streptomycete bacteria have cell walls made of lignin and not peptidoglycan. D. Streptomycete bacteria change color when exposed to antibiotics.
A neurologist diagnosis a patient with damage to the hippocampus. This observation is consistent with the difficulties the patient reports with
A. forming memories of recent events. B. effectively coordinating movements once initiated. C. planning movements. D. maintaining a steady and regular heartbeat. E. perceiving tactile stimulation from different regions of their body.
Boyle’s law of gases helps explain the mechanics of breathing. What does Boyle’s law state?
a. For gases in a closed space, pressure and volume are positively correlated. b. The volume occupied by an ideal gas is directly proportional to the number of molecules present. c. For gases in a closed space, pressure and volume are inversely related. d. The volume occupied by an ideal gas is inversely proportional to the number of molecules present.