When a cell expands in diameter, volume increases by the ____ of the diameter, and surface area increases by the____
of the diameter.
a. square; square
b. square; cube
c. cube; square
d. cube; cube
e. square root; square root
ANSWER: c
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Vancomycin
A. interferes with the action of the lipid carrier that transports peptidoglycan precursors across the plasma membrane. B. inhibits the transglycosylase reaction in peptidoglycan biosynthesis. C. inhibits the transpeptidation reaction in peptidoglycan biosynthesis. D. blocks the addition of the pentapeptide chain during peptidoglycan biosynthesis.
The ability to extend a leg originates from:
a. contraction of ligaments b. contraction of tendons c. contraction of a muscle d. lengthening of a muscle e. relaxation of a synovial joint
Starfish that reproduce by splitting into pieces are reproducing by
A.) binary fission. B.) vegetative reproduction. C.) budding. D.) fragmentation.
Activity of the neurotransmitter acetylcholine is brief because it
A) "self-destructs" shortly after leaving the presynaptic neuron. B) is transported back into the presynaptic neuron. C) diffuses out of the synaptic cleft. D) is pumped out of the synaptic cleft by the sodium-potassium pump. E) is rapidly broken down by enzymes in the synaptic cleft.