Cholesterol Synthesis and Functions Quiz

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Where does the synthesis of cholesterol occur in the cell?

Cytoplasm (correct)

Endoplasmic reticulum

Mitochondria

Nucleus

Which tissues contribute the most to the cholesterol pool in the body?

Reproductive tissues (correct)

Adipose tissue

Connective tissue

Muscle tissue

What provides the reducing equivalents for cholesterol synthesis?

ATP

FADH2

NADPH (correct)

NAD+

What is the precursor molecule for cholesterol synthesis?

3-hydroxy-3-methylglutaryl (HMG) CoA Signup and view all the answers

What is the role of Hexose Monophosphate in cholesterol synthesis?

Produces cholesterol endogenously Signup and view all the answers

What is the structural role of cholesterol in membranes?

Modulating membrane fluidity Signup and view all the answers

What is the primary function of cholesterol in the body?

Serving as a precursor for bile acids and steroid hormones Signup and view all the answers

Which of the following is a product of cholesterol metabolism?

Bile salts Signup and view all the answers

Which tissues can efficiently oxidize ketone bodies according to the text?

Extrahepatic tissues excluding those lacking mitochondria Signup and view all the answers

What is the consequence of an elevation in ketone body concentration in the blood?

Acidemia (ketoacidosis) Signup and view all the answers

Which of the following is true about the use of ketone bodies by peripheral tissues?

Extrahepatic tissues lacking mitochondria efficiently oxidize ketone bodies Signup and view all the answers

What is the rate-limiting step in cholesterol synthesis?

Synthesis of mevalonate Signup and view all the answers

Which enzyme is a major control point in cholesterol synthesis?

HMG CoA reductase Signup and view all the answers

In cholesterol degradation, what happens to the sterol nucleus?

It is converted to bile acids and bile salts Signup and view all the answers

Which pathway eliminates the sterol nucleus in the degradation of cholesterol?

Synthesis of bile acids Signup and view all the answers

What is the function of bile acids in digestion?

Emulsify fats in the intestines Signup and view all the answers

Which compound passes directly from the liver into the duodenum or is stored in the gallbladder?

Bile acids Signup and view all the answers

Cholesterol Synthesis and Functions Quiz

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