Methylotrophic bacteria
A. produce methane as a by-product of their metabolism.
B. are strict anaerobes.
C. use reduced one-carbon compounds as their main source of carbon.
D. are members of the Archaea based on 16S rRNA sequencing.
Answer: C
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If the GC content of two organisms is 45% in both,
A. they are definitely related. B. they are definitely not related. C. they may or may not be related. D. the AT content is 65%. E. they are definitely related AND the AT content is 65%.
In addition to S. aureus, impetigo may also involve
A. M. luteus. B. S. pyogenes. C. S. epidermidis. D. Pseudomonas spp.
Which of the following is not part of the appendicular skeleton?
A. pelvic girdle B. sternum C. pectoral girdle D. femur E. humerus
Scaffold proteins ensure that signals are relayed ____
a. slowly b. efficiently c. inaccurately d. methodically e. simultaneously