A molecule that closely resembles the shape of a substrate for an enzyme would most likely serve as a
A. allosteric activator.
B. competitive inhibitor.
C. allosteric inhibitor.
D. noncompetitive inhibitor.
Answer: B
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Most amphibians have an aquatic larval form with _____ and a terrestrial adult form with _____
A. gills; lungs B. lungs; gills C. lungs; lungs D. gas exchange through the skin; lungs E. gills; gas exchange through the skin
Refer to the accompanying figure. Which of the following represents the fall turnover?
a. 1 going to 2
b. 2 going to 3
c. 3 going to 4
d. 4 going to 1
e. 4 going to 2
Which of the following structure(s) is (are) NOT found in prokaryotic cells?
A. Cell membrane B. Chromosome C. Plasmids D. Polymer consisting of sugars (N-acetylglucosamine and N-acetylmuramic acid) and peptide chains of three to five amino acids E. Mitochondria
Plants readily take up nitrogen from atmosphere.
A. true B. false