Question

multiple select question select all that apply which happen during the preparatory reaction? three - carbon pyruvate reacts with coenzyme a carbon dioxide is given off by the cell citric acid is broken down nad+ is converted to nadh

Explanation:

In the preparatory reaction of cellular respiration, pyruvate (a three - carbon molecule) reacts with coenzyme A. One carbon is released as carbon dioxide, and NAD+ is reduced to NADH. The citric acid cycle occurs after the preparatory reaction and involves the breakdown of acetyl - CoA, not the breakdown of citric acid during the preparatory reaction.

Answer:

• Three - carbon pyruvate reacts with coenzyme A
• Carbon dioxide is given off by the cell
• NAD+ is converted to NADH