The mechanism of action of the antibiotic vancomycin is
A) inhibition of protein synthesis.
B) inhibition of cell wall synthesis.
C) inhibition of nucleic acid synthesis.
D) inhibition of a metabolic pathway.
E) disruption of cytoplasmic membranes.
B
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Quaking aspen can send out underground stems for asexual reproduction. Sexual reproduction is not as common, but when it does happen, the haploid gametes have 19 chromosomes. How many chromosomes are in the cells of the underground stems?
A) 9 B) 10 C) 19 D) 38
The sinoatrial node controls the heartbeat.
Answer the following statement true (T) or false (F)
The problem with tissue rejection following organ transplants
A. is due to the tissues being recognized as nonself, and therefore being treated as a foreign substance. B. can be reduced by administering immunosuppressive drugs. C. can be reduced if the organ donor is a close relative with very similar tissue proteins. D. All of the choices are correct. E. None of these are correct.
Mechanoreceptors do not respond to
Select one: a. touch. b. sound waves. c. motion. d. gravity. e. temperature.