Which Statement Is NOT True of the Reaction Catalyzed by Ribonucleotide

question 1

Multiple Choice

Which statement is NOT true of the reaction catalyzed by ribonucleotide reductase?

• A) Glutathione is part of the path of electron transfer.
• B) It acts on nucleoside diphosphates.
• C) Its mechanism involves formation of a free radical.
• D) There is a separate enzyme for each nucleotide (ADP, CDP, GDP, UDP).
• E) Thioredoxin acts as an essential electron carrier.

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