Which of the following statements about inhibition is true?...

Which of the following statements about inhibition is true? a. Allosteric inhibitors and allosteric activators are competitive for a given enzyme. b. If an inhibitor binds the active site, it is considered noncompetitive. c. If an inhibitor binds to a site other than the active site, this is competitive inhibition. d. A noncompetitive inhibitor is believed to change the shape of the enzyme, making its active site inoperable. e. competitive inhibition is usually not reversible.

Which of the following statements about inhibition is true?
a. Allosteric inhibitors and allosteric activators are competitive for a given enzyme.
b. If an inhibitor binds the active site, it is considered noncompetitive.
c. If an inhibitor binds to a site other than the active site, this is competitive inhibition.
d. A noncompetitive inhibitor is believed to change the shape of the enzyme, making its active site inoperable.
e. competitive inhibition is usually not reversible.

Key Concepts

Allosteric Regulation

Allosteric regulation refers to the modulation of an enzyme's activity through the binding of effectors at sites other than the active site, known as allosteric sites. These effectors can either inhibit or activate the enzyme by inducing a conformational change that influences the active site's functionality.

Enzyme Inhibition

Enzyme inhibition refers to the process by which the activity of an enzyme is reduced or completely halted by the binding of an inhibitor. Inhibitors can interact with enzymes in different ways, affecting their catalytic function and often serving as a key regulatory mechanism in biological systems or as targets in drug design.

Competitive Inhibition

Competitive inhibition occurs when an inhibitor resembles the substrate and competes for binding to the enzyme's active site. This type of inhibition can often be overcome by increasing substrate concentration, as both the substrate and inhibitor vie for the same binding location on the enzyme.

Noncompetitive Inhibition

Noncompetitive inhibition involves an inhibitor binding to an enzyme at a location other than the active site, causing a conformational change that reduces the enzyme's efficiency or renders it entirely inactive. Because the binding site of the inhibitor is separate from the substrate binding site, increasing substrate concentration does not restore full enzymatic activity.

Transcript

Please give Ace some feedback