Enzymes Overview and Mechanisms

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Questions and Answers

What are enzymes?

proteins

Which of the following binds to the active site of an enzyme?

Substrate (correct)
Cofactor
Product
Enzyme

Which of the following correctly represents the mechanism of enzyme function?

E + P -> E-P
S + E -> S-E -> P
E + S -> E-S -> E-P -> E + P (correct)
E-S -> E + S

An enzyme can only bind one reactant at a time.

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

An enzyme speeds up a chemical reaction in the cell, but can only be used once.

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

Flashcards

Enzymes

Special proteins that speed up chemical reactions in the cell.

Substrate

The molecule that an enzyme binds to and acts upon.

Enzyme Mechanism

The sequence of steps an enzyme takes to catalyze a reaction.

Enzyme Reusability

Enzymes are not consumed in the reactions they catalyze and can be used repeatedly.

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Enzyme Specificity

Enzymes are highly specific, often only binding to a single type of substrate.

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Study Notes

Enzymes Overview

Enzymes are biological catalysts that facilitate and speed up chemical reactions in cells.
They are primarily composed of proteins, which gives them structural and functional properties.

Mechanism of Enzyme Action

Enzyme function follows a specific mechanism represented as:
- E + S (enzyme + substrate) binds to form E-S (enzyme-substrate complex), which then transforms into E-P (enzyme-product complex), releasing the products and regenerating the enzyme.

Active Site Interaction

The active site of an enzyme is where the substrate binds; this interaction is crucial for the catalytic activity.

Binding Capacity

An enzyme is capable of binding multiple substrate molecules at different times, not just one at a time.

Enzyme Reusability

Enzymes are not consumed in the reactions they catalyze, allowing them to be used repeatedly for multiple reactions.

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Description

This quiz covers the fundamentals of enzymes, focusing on their role as biological catalysts. It explains the mechanisms of enzyme action, the importance of the active site, and the binding capacity and reusability of enzymes in chemical reactions. Test your knowledge on these essential biological molecules!