AP BIOLOGY

Detailed explanation-1: -Feedback inhibition, where the end product of the pathway inhibits an upstream process, is an important regulatory mechanism in cells. The production of both amino acids and nucleotides is controlled through feedback inhibition.

Detailed explanation-2: -Competitive inhibitors impair reaction progress by binding to an enzyme, often at the active site, and preventing the real substrate from binding. At any given time, only the competitive inhibitor or the substrate can be bound to the enzyme (not both). That is, the inhibitor and substrate compete for the enzyme.

Detailed explanation-3: -Feedback inhibition is the phenomenon where the output of a process is used as an input to control the behavior of the process itself, oftentimes limiting the production of more product.

Detailed explanation-4: -An inhibitor may bind to an enzyme and block binding of the substrate, for example, by attaching to the active site. This is called competitive inhibition, because the inhibitor “competes” with the substrate for the enzyme.