Question

What is the link reaction in aerobic respiration?

A. Pyruvate is carboxylated, acetyl reacts with coenzyme A, reducing NADH + H+
B. Pyruvate is decarboxylated, acetyl reacts with coenzyme A, forming NADH + H+
C. Pyruvate reacts with coenzyme A, forming NADH + H+
D. Pyruvate is decarboxylated, reacting with coenzyme A, reducing NADH + H+

Answer 1

B. is the correct answer. - Pyruvate is decarboxylated, acetyl reacts with coenzyme A, forming NADH + H+

During the Krebs Cycle ( also known as the Citric Acid Cycle) the Pyruvate molecule decarboxylated ( meaning it lose a carbon a carbon dioxide molecule) and forms the molecule acetyl- coenzyme A also known as (acetyl CoA). Furthermore, NAD+ ( nicotinamide adenine dinucleotide) reacts with H+ to form NADH