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Enzymes and Their Functions

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Questions and Answers

What is the primary role of enzymes in cells?

To regulate gene expression
To maintain cellular structure
To catalyze chemical reactions (correct)
To synthesize proteins

What is the term for the site on an enzyme where the substrate binds?

Active site (correct)
Catalytic center
Cofactor binding site
Enzyme-substrate complex

What is the primary function of oxidoreductase enzymes?

To rearrange molecular structures
To transfer chemical groups
To facilitate oxidation and reduction reactions (correct)
To cleave chemical bonds

What is the role of cofactors in enzyme-mediated reactions?

To stabilize the enzyme structure (C) Signup and view all the answers

What is the name of the enzyme that plays a crucial role in generating ATP and converting H+ and O2 to H2O?

Cytochrome C Oxidase (C) Signup and view all the answers

What is the term for the combination of factors that influence optimal enzyme activity?

Optimal conditions (B) Signup and view all the answers

What is the main function of transferase enzymes?

To facilitate the movement or transfer of chemical groups (A) Signup and view all the answers

What is the role of the active site in enzyme specificity?

It provides a binding site for the substrate (B) Signup and view all the answers

What is the difference between organic and inorganic cofactors?

Organic cofactors are molecules, while inorganic cofactors are ions (D) Signup and view all the answers

What is the primary function of lyase enzymes?

To catalyse the cleavage of chemical bonds (A) Signup and view all the answers

What is the role of haem in enzyme-mediated reactions?

It is a coenzyme that facilitates electron transport (C) Signup and view all the answers

What is the optimal enzyme activity dependent on?

A combination of temperature, pH, cofactors, and substrate (B) Signup and view all the answers