All of the following are found in bacterial cells EXCEPT
a. ribosomes.
b. genetic material.
c. cell wall.
d. mitochondria.
D
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True or false: Marine fish have impermeable renal tubules, allowing them to reabsorb scarce elecrolytes without also reabsorbing water they are trying to eliminate
A. true B. false
Humus includes all of the following EXCEPT
a. feces. b. dead organisms. c. leaf litter. d. weathered rock. e. decomposing organic matter
Excitatory neurotransmitters encourage the generation of new electrical impulses by which one of the following?
A) stimulating saltatory conduction B) stimulating depolarization of postsynaptic neurons C) inhibiting postsynaptic neurons from repolarizing D) inhibiting presynaptic neurons from depolarizing E) stimulating depolarization of presynaptic neurons
Bacteria are most sensitive to antibiotics during the _____ phase of growth
a. exponential b. lag c. stationary d. death e. both A and C