Questions: Question 49 (2 points) The cleavage of a protein with chymotrypsin occurs in stage [1] of catabolism. True False

The answer is False.

Explanation: Chymotrypsin is a protease enzyme that cleaves proteins at specific sites, typically at the carboxyl side of aromatic amino acids like phenylalanine, tyrosine, and tryptophan. This cleavage is part of the process of protein digestion, which is a form of catabolism. However, the stages of catabolism are generally divided into three main stages:

1. Stage 1: Digestion - This involves the breakdown of large macromolecules (like proteins, carbohydrates, and fats) into their smaller building blocks (amino acids, simple sugars, and fatty acids). The cleavage of proteins by enzymes like chymotrypsin occurs in this stage.
2. Stage 2: Conversion to Acetyl-CoA - The small molecules produced in stage 1 are further broken down into acetyl-CoA.
3. Stage 3: Citric Acid Cycle and Oxidative Phosphorylation - Acetyl-CoA enters the citric acid cycle, and the resulting high-energy electrons are used in oxidative phosphorylation to produce ATP.

Since the cleavage of a protein with chymotrypsin occurs during the digestion process, which is part of stage 1 of catabolism, the statement is False.