Cephalosporins and penicillins act on the cross-linkages in peptidoglycan. This usually results in
A) membrane breakdown.
B) cell lysis.
C) gram-positive cells becoming gram-negative.
D) inhibition of protein synthesis.
Answer: B) cell lysis.
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The order of reagents in the Gram stain reaction are
A. safranin, alcohol, methylene blue, iodine. B. crystal violet, iodine, alcohol, safranin. C. methylene blue, alcohol, safranin. D. crystal violet, alcohol, iodine, safranin.
Microscope rulers measure microorganisms in micrometers (?m). How many micrometers fit in a meter?
A. 100 B. 1,000,000 C. 100,000 D. 1,000 E. 10
In glycolysis, fructose-1, 6-bisphosphate splits, forming two molecules of:
a. ADP. b. citric acid. c. G3P. d. glucose. e. acetyl CoA.
Scaffold proteins organize groups of intracellular signaling kinases into signaling complexes
__________________ Indicate whether the statement is true or false.