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Glycolysis and Glucose Transporters

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Questions and Answers

In which step of glycolysis is triose phosphate isomerase involved?

Step 7

Step 2

Step 10

Step 5 (correct)

What is the primary carbohydrate found in milk?

Lactose (correct)

Galactose

Glucose

Fructose

What is the location of the TCA cycle in the cell?

Cytosol

Endoplasmic reticulum

Golgi apparatus

Mitochondria (correct)

What is the effect of glycogen storage diseases on the liver?

Hepatomegaly Signup and view all the answers

What is the consequence of G6PD deficiency?

Impaired pentose phosphate pathway Signup and view all the answers

In which stage of metabolism does the TCA cycle occur?

Stage 3 Signup and view all the answers

What is the primary function of GLUT2 in the liver?

To regulate glucose uptake in response to changes in blood glucose concentration Signup and view all the answers

Which of the following tissues is dependent on glucose for fuel and expresses GLUT1?

Red blood cells Signup and view all the answers

What is the consequence of impaired glucose transport in the liver?

Hyperglycemia Signup and view all the answers

What is the primary function of GLUT1 in the body?

To transport glucose from the cerebrospinal fluid into neuronal cells Signup and view all the answers

In which stage of glycolysis is ATP generated?

Oxidoreduction-phosphorylation stage Signup and view all the answers

Which glucose transporter is involved in the transport of glucose, galactose, and fructose in intestinal mucosal cells?

GLUT2 Signup and view all the answers

What is the primary function of GLUT4 in the body?

To facilitate glucose uptake in adipose tissue and muscle cells Signup and view all the answers

What is the role of GLUT3 in the brain?

To transport glucose into brain cells Signup and view all the answers

What is the result of the addition of a phosphoryl group to glucose during glycolysis?

It destabilizes glucose, facilitating its further metabolism Signup and view all the answers

What is the consequence of a defect in GLUT2 in the beta cells of the pancreas?

Decreased insulin secretion Signup and view all the answers

Which enzyme catalyzes the transfer of the phosphoryl group from ATP to glucose in the priming stage of glycolysis?

Hexokinase Signup and view all the answers

What is the result of the isomerization of glucose 6-phosphate to fructose 6-phosphate in the glycolytic pathway?

Fructose 6-phosphate is phosphorylated to form fructose 1,6-bisphosphate Signup and view all the answers