AP BIOLOGY

Detailed explanation-1: -A competitive inhibitor competes with substrate for binding to an active site. When the inhibitor occupies the active site, it forms an enzyme-inhibitor complex and the enzyme cannot react (Fig. 4-4) until the inhibitor dissociates.

Detailed explanation-2: -Competitive inhibitors bind to the active site of the enzyme and prevent substrates from binding to enzyme. This prevents the enzyme-substrate reaction from happening, thereby decreasing the activity of enzymes; however, competitive inhibitors can be overcome by increasing the concentration of substrates.

Detailed explanation-3: -Competitive inhibition occurs when molecules very similar to the substrate molecules bind to the active site and prevent binding of the actual substrate. Penicillin, for example, is a competitive inhibitor that blocks the active site of an enzyme that many bacteria use to construct their cell…

Detailed explanation-4: -In virtually every case, competitive inhibitors bind in the same binding site (active site) as the substrate, but same-site binding is not a requirement.

Detailed explanation-5: -A competitive inhibitor binds to the substrate and inhibits it from binding to the active site of the enzyme.