The special molecules that speed up biochemical reactions are called:
AEnzymes
BSugars
CLipids
DLigands
Answer & Solution
Correct answer: A. Enzymes
1. A substance that helps a chemical reaction to occur is a catalyst.
2. Living cells use a protein catalyst for each step of a pathway.
3. The special molecules that catalyze biochemical reactions are called enzymes.
4. Each reaction step is facilitated, or catalyzed, by one of them.
_Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 6 'Metabolism', sections 6.1-6.5_
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