Podcast
Questions and Answers
Which of the following is a key characteristic of glucoamylase?
Which of the following is a key characteristic of glucoamylase?
- It begins cleavage at the reducing end of saccharides.
- It is heavily glycosylated to protect it from digestive proteases. (correct)
- It has a single catalytic site.
- It is specific for the α–1,6 bonds between glucose residues.
What is the primary role of α-amylase in relation to glucoamylase?
What is the primary role of α-amylase in relation to glucoamylase?
- α-amylase splits large polysaccharides, generating new substrate molecules for glucoamylase. (correct)
- α-amylase cleaves the glucoamylase enzyme, reducing its activity.
- α-amylase and glucoamylase have the same catalytic activity and work synergistically.
- α-amylase inhibits the activity of glucoamylase.
What is the main difference between the two catalytic sites of the sucrase–isomaltase complex?
What is the main difference between the two catalytic sites of the sucrase–isomaltase complex?
- One site has maltase activity, while the other has sucrase activity.
- The two sites have the same substrate specificity, but differ in their catalytic activities.
- One site hydrolyzes sucrose, while the other hydrolyzes isomaltose.
- One site is responsible for hydrolyzing α-1,4 bonds, while the other hydrolyzes α-1,6 bonds. (correct)
Which enzyme is responsible for the majority of maltose hydrolysis in the small intestine?
Which enzyme is responsible for the majority of maltose hydrolysis in the small intestine?
How many catalytic sites does the trehalase enzyme have?
How many catalytic sites does the trehalase enzyme have?
What is the primary function of the brush border membrane in the small intestine?
What is the primary function of the brush border membrane in the small intestine?
Which of the following is a characteristic of the sucrase-isomaltase complex?
Which of the following is a characteristic of the sucrase-isomaltase complex?
Which enzyme is primarily responsible for the hydrolysis of sucrose in the small intestine?
Which enzyme is primarily responsible for the hydrolysis of sucrose in the small intestine?
What is the primary function of the glycosylation of glucoamylase?
What is the primary function of the glycosylation of glucoamylase?
Which enzyme is responsible for the hydrolysis of isomaltose in the small intestine?
Which enzyme is responsible for the hydrolysis of isomaltose in the small intestine?
