10 Questions
Which of the following is a key characteristic of glucoamylase?
It is heavily glycosylated to protect it from digestive proteases.
What is the primary role of α-amylase in relation to glucoamylase?
α-amylase splits large polysaccharides, generating new substrate molecules for glucoamylase.
What is the main difference between the two catalytic sites of the sucrase–isomaltase complex?
One site is responsible for hydrolyzing α-1,4 bonds, while the other hydrolyzes α-1,6 bonds.
Which enzyme is responsible for the majority of maltose hydrolysis in the small intestine?
Sucrase-isomaltase complex
How many catalytic sites does the trehalase enzyme have?
One
What is the primary function of the brush border membrane in the small intestine?
To absorb nutrients from the intestinal lumen.
Which of the following is a characteristic of the sucrase-isomaltase complex?
It is cleaved by intestinal proteases into two separate subunits.
Which enzyme is primarily responsible for the hydrolysis of sucrose in the small intestine?
Sucrase-isomaltase complex
What is the primary function of the glycosylation of glucoamylase?
To protect the enzyme from degradation by digestive proteases.
Which enzyme is responsible for the hydrolysis of isomaltose in the small intestine?
Sucrase-isomaltase complex
Test your knowledge on lactose intolerance and lactase deficiency, including the symptoms and types of lactase deficiency. Learn about the conversion of lactose by colonic bacteria and the consequences of incomplete absorption.
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