Enzyme Regulation Overview

<p>It occurs over seconds to minutes (A)</p> Signup and view all the answers

<p>They are usually irreversible and key to metabolic control. (C)</p> Signup and view all the answers

<p>Induction (B)</p> Signup and view all the answers

<p>Product (D)</p> Signup and view all the answers

<p>The balance between enzyme synthesis and degradation (C)</p> Signup and view all the answers

<p>Allosteric regulation (D)</p> Signup and view all the answers

<p>They exhibit cooperativity with their substrates. (A)</p> Signup and view all the answers

<p>It makes the enzyme more susceptible to proteolysis. (A)</p> Signup and view all the answers

<p>Decreasing enzyme synthesis in response to certain products. (C)</p> Signup and view all the answers

<p>Transcriptional activation (D)</p> Signup and view all the answers

<p>It changes the shape of the enzyme to prevent substrate binding. (B)</p> Signup and view all the answers

<p>Phosphorylation (C)</p> Signup and view all the answers

<p>To prevent premature activation and cell damage. (B)</p> Signup and view all the answers

<p>Permanent alterations that prevent the enzyme from functioning. (A)</p> Signup and view all the answers

<p>Serine, Threonine, and Tyrosine (C)</p> Signup and view all the answers

<p>It induces structural changes that affect substrate binding. (B)</p> Signup and view all the answers

<p>It can increase the enzyme's catalytic activity. (A)</p> Signup and view all the answers

<p>It interacts with the enzyme non-covalently. (A)</p> Signup and view all the answers

An enzyme that controls the rate of a metabolic pathway.

A sequence of enzyme-catalyzed reactions.

Controlling the activity of enzymes in a metabolic pathway.

Controlling enzyme concentration by changing the rate of enzyme synthesis/degradation.

Controlling enzyme activity and not affecting the concentration or amount.

Increased enzyme synthesis, stimulated by an inducer (often the substrate or hormone).

Decreased enzyme synthesis, in response to a repressor (often the product or hormone).

Breakdown of enzyme protein, altering enzyme availability.

Enzyme activity changes due to binding of a molecule (effector or modifier) at a site other than the active site.

Enzyme with multiple binding sites, including an active site and an allosteric site, which affects enzyme activity.

The rate of synthesis and degradation of an enzyme, which may control the number of enzyme molecules.

A molecule that stimulates enzyme synthesis.

A molecule that inhibits enzyme synthesis.

End product binding to an enzyme, causing a conformational change and inhibiting its activity.

Molecule that binds to an enzyme away from the active site, affecting its activity.

Enzyme activity changes due to addition or removal of a chemical group (like phosphate), often used to regulate activity.

Adding a phosphate group to a protein, typically altering its enzymatic activity.

Enzyme activity change through irreversible chemical bonding (e.g., cleavage of a peptide).

Inactive precursor of an enzyme, activated by proteolytic cleavage (breaking a protein).

Digestive enzymes produced by the pancreas, released in inactive form (zymogens).

The process of breaking a protein into smaller pieces by enzymatic means.