Enzyme Components and Functions

Enzyme Components and Functions

Assessment

Flashcard

Biology

University

Hard

Created by

Kristen Humphries

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5 questions

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1.

FLASHCARD QUESTION

Front

What is a holoenzyme?

Back

A complete, active enzyme consisting of an apoenzyme (protein part) and a cofactor (non-protein part). It is the functional form of the enzyme.

2.

FLASHCARD QUESTION

Front

What is an apoenzyme?

Back

The inactive protein part of an enzyme that requires a cofactor to become active.

3.

FLASHCARD QUESTION

Front

What is a prosthetic group?

Back

A tightly or permanently bound non-protein component of an enzyme, which is essential for its activity (e.g., heme in hemoglobin).

4.

FLASHCARD QUESTION

Front

What is a coenzyme?

Back

A loosely bound organic molecule (often derived from vitamins) that assists enzyme function by carrying chemical groups or electrons (e.g., NAD⁺, FAD, Coenzyme A).

5.

FLASHCARD QUESTION

Front

What is a cofactor?

Back

A non-protein substance (which can be an inorganic ion or organic molecule) required for enzyme activity. It includes both metal ions (e.g., Mg²⁺, Zn²⁺) and coenzymes.