Podcast
Questions and Answers
Which of the following is an example of catabolism?
Which of the following is an example of catabolism?
- Conversion of small molecules into acetyl COA
- Synthesis of more complex molecules from simple precursors
- Conversion of energy from fuels into biologically useful forms (correct)
- Oxidation of acetyl COA to produce ATP
What is the main function of digestive enzymes?
What is the main function of digestive enzymes?
- To break down proteins into amino acids
- To cleave substrates by addition of a water molecule (correct)
- To convert small molecules into acetyl COA
- To activate zymogens or proenzymes
Why are all digestive enzymes originally secreted as zymogens or proenzymes?
Why are all digestive enzymes originally secreted as zymogens or proenzymes?
- To increase their catalytic activity
- To prevent them from being active before reaching their target site (correct)
- To protect them from degradation
- To ensure proper digestion
Which enzyme is responsible for the cleavage of proteins into smaller fragments in the stomach?
Which enzyme is responsible for the cleavage of proteins into smaller fragments in the stomach?
What activates secretin in the stomach?
What activates secretin in the stomach?
Which enzyme cleaves trypsinogen into trypsin in the small intestine?
Which enzyme cleaves trypsinogen into trypsin in the small intestine?
What is the role of lipases in lipid digestion?
What is the role of lipases in lipid digestion?
Which enzyme is responsible for the cleavage of peptides on the C-terminus of lysine and arginine residues in the small intestine?
Which enzyme is responsible for the cleavage of peptides on the C-terminus of lysine and arginine residues in the small intestine?
What stimulates the release of NaHCO3 from the pancreas, neutralizing the acid in the stomach?
What stimulates the release of NaHCO3 from the pancreas, neutralizing the acid in the stomach?
What enzyme is responsible for the cleavage of trypsinogen into trypsin in the small intestine?
What enzyme is responsible for the cleavage of trypsinogen into trypsin in the small intestine?
Which enzyme is a self-cleaving proenzyme that is converted into a proteolytic enzyme in the stomach?
Which enzyme is a self-cleaving proenzyme that is converted into a proteolytic enzyme in the stomach?
What hormone is stimulated by peptide digestion products of pepsin and causes the pancreas to secrete digestive enzymes?
What hormone is stimulated by peptide digestion products of pepsin and causes the pancreas to secrete digestive enzymes?
What is the role of lipases in lipid digestion?
What is the role of lipases in lipid digestion?
What is the primary role of catabolism?
What is the primary role of catabolism?
Why are fats a more efficient fuel source than carbohydrates such as glucose?
Why are fats a more efficient fuel source than carbohydrates such as glucose?
What is the activated carrier of 2-carbon fragments (acetyl groups) in metabolism?
What is the activated carrier of 2-carbon fragments (acetyl groups) in metabolism?
What is the oxidized form of NAD+ in fuel oxidation?
What is the oxidized form of NAD+ in fuel oxidation?
Which of the following is an example of anabolism?
Which of the following is an example of anabolism?
What is the main function of catabolism?
What is the main function of catabolism?
Which of the following pathways can be both catabolic and anabolic?
Which of the following pathways can be both catabolic and anabolic?
What are all digestive enzymes originally secreted as?
What are all digestive enzymes originally secreted as?
What is the mechanism by which digestive enzymes cleave their substrates?
What is the mechanism by which digestive enzymes cleave their substrates?
Which of the following is NOT a function of lipases in lipid digestion?
Which of the following is NOT a function of lipases in lipid digestion?
Which of the following is an example of catabolism?
Which of the following is an example of catabolism?
Which of the following is responsible for the breakdown of proteins into smaller fragments in the stomach?
Which of the following is responsible for the breakdown of proteins into smaller fragments in the stomach?
What is the role of secretin in the stomach?
What is the role of secretin in the stomach?
What is the main product of digestion of small molecules?
What is the main product of digestion of small molecules?
