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Enzyme Catalysis and Biochemical Reactions

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Questions and Answers

What is the primary function of enzymes?

To serve as organic cofactors for biological reactions
To generate peptide bonds
To catalyze the self-cleavage of their own molecules
To catalyze reactions and speed up chemical processes (correct)

What is the most common structure of enzymes?

Fibrous proteins
Metalloenzymes
Membrane-bound proteins
Globular proteins (correct)

Which of the following is NOT a common way to name enzymes?

Derived from the enzyme's source or origin
Derived from the enzyme's three-dimensional structure (correct)
Derived from the compound they act on
Derived from the reaction they catalyze

What is the role of cofactors in enzyme function?

Cofactors are required for enzyme catalysis (D) Signup and view all the answers

What is the relationship between an apoenzyme and a holoenzyme?

An apoenzyme is the protein portion, and a holoenzyme is the complete active enzyme (C) Signup and view all the answers

Which of the following is NOT one of the six major classes of enzymes?

Decarboxylases (A) Signup and view all the answers

What is the primary function of enzymes in living organisms?

To accelerate chemical reactions (D) Signup and view all the answers

What is the chemical nature of enzymes?

All of the above (D) Signup and view all the answers

What is the role of enzymes in metabolism?

Enzymes are responsible for all the chemical and physical changes in the living organism (B) Signup and view all the answers

What is the difference between enzymes and ribozymes?

Enzymes are made of proteins while ribozymes are made of ribonucleic acids (D) Signup and view all the answers

Why are enzymes essential for life?

Without enzymes, chemical reactions in the body would occur at a rate far too slow for the pace of metabolism (C) Signup and view all the answers

Which of the following is not a characteristic of enzymes?

Enzymes undergo permanent chemical changes during reactions (A) Signup and view all the answers

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