### Answer

The correct term for the reactant on which an enzyme works is **substrate**.

Here's a brief overview of the other terms for clarity:

1. **Cofactor**: This refers to non-protein chemical compounds that are required for the biological activity of some enzymes. They can be metal ions or organic molecules.

2. **Coenzyme**: This is a specific type of cofactor that is an organic molecule. Coenzymes often assist enzymes by transferring specific atoms or functional groups.

3. **Catalyst**: This is a substance that increases the rate of a chemical reaction without undergoing any permanent change itself. While enzymes are biological catalysts, the term "catalyst" does not specify the reactant.

4. **Active site**: This is the region of the enzyme where the substrate binds. It’s crucial for enzyme activity but does not refer to the substrate itself.

In summary, among the provided options, **substrate** is the most accurate response as it specifically describes the molecule upon which an enzyme acts.

Question

### Answer

The correct term for the reactant on which an enzyme works is **substrate**.

Here's a brief overview of the other terms for clarity:

1. **Cofactor**: This refers to non-protein chemical compounds that are required for the biological activity of some enzymes. They can be metal ions or organic molecules.

2. **Coenzyme**: This is a specific type of cofactor that is an organic molecule. Coenzymes often assist enzymes by transferring specific atoms or functional groups.

3. **Catalyst**: This is a substance that increases the rate of a chemical reaction without undergoing any permanent change itself. While enzymes are biological catalysts, the term "catalyst" does not specify the reactant.

4. **Active site**: This is the region of the enzyme where the substrate binds. It’s crucial for enzyme activity but does not refer to the substrate itself.

In summary, among the provided options, **substrate** is the most accurate response as it specifically describes the molecule upon which an enzyme acts.

Knowee AI · Accepted Answer

### Answer

The correct term for the reactant on which an enzyme works is **substrate**.

Here's a brief overview of the other terms for clarity:

1. **Cofactor**: This refers to non-protein chemical compounds that are required for the biological activity of some enzymes. They can be metal ions or organic molecules.

2. **Coenzyme**: This is a specific type of cofactor that is an organic molecule. Coenzymes often assist enzymes by transferring specific atoms or functional groups.

3. **Catalyst**: This is a substance that increases the rate of a chemical reaction without undergoing any permanent change itself. While enzymes are biological catalysts, the term "catalyst" does not specify the reactant.

4. **Active site**: This is the region of the enzyme where the substrate binds. It’s crucial for enzyme activity but does not refer to the substrate itself.

In summary, among the provided options, **substrate** is the most accurate response as it specifically describes the molecule upon which an enzyme acts.

The reactant on which an enzyme works.Group of answer choicescofactorcoenzymecatalystsubstrateactive site

Question

The reactant on which an enzyme works.

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