Protein Metabolism Quiz

Which enzyme is secreted by the stomach?

• Pepsin

• Chymotrypsin

• Amylase

• Trypsin

Where is Pepsinogen converted to active enzyme?

• By HCI

• By Enterokinase

• By Trypsin

• By Lipase

What is the precursor of Trypsin?

• Trypsin

• Chymotrypsinogen

• Pepsinogen

• Amylase

Which enzyme is involved in the hydrolysis of proteins to smaller peptides?

• Lipase

• Isomerase

• Peptidase

• Amylase

Where are amino acids absorbed from the small intestine transported to?

• Muscles

• Brain

• Liver

• Kidney

What is the term used when nitrogen losses are less than intake?

• Nitrogen equilibrium

• Neutral nitrogen balance

• Positive nitrogen balance

• Negative nitrogen balance

Which amino acid is synthesized directly by transamination from metabolites?

• Tyrosine

• Cysteine

• Leucine

• Aspartic acid

What is the primary means by which amino acid-derived nitrogen is metabolized?

• Krebs Cycle

• Glycolysis

• Urea Cycle

• Calvin Cycle

Which enzyme catalyzes the reaction between ornithine and carbamoyl phosphate?

• Ornithine transcarbamylase

• Argininosuccinase

• Argininosuccinate synthase

• Arginase

What is the toxic product formed by amino acid oxidases?

• Oxygen

• Hydrogen

• Water

• Hydrogen Peroxide