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?

<p>Hepatomegaly (B)</p> Signup and view all the answers

What is the consequence of G6PD deficiency?

<p>Impaired pentose phosphate pathway (B)</p> Signup and view all the answers

In which stage of metabolism does the TCA cycle occur?

<p>Stage 3 (C)</p> Signup and view all the answers

What is the primary function of GLUT2 in the liver?

<p>To regulate glucose uptake in response to changes in blood glucose concentration (C)</p> Signup and view all the answers

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

<p>Red blood cells (C)</p> Signup and view all the answers

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

<p>Hyperglycemia (C)</p> Signup and view all the answers

What is the primary function of GLUT1 in the body?

<p>To transport glucose from the cerebrospinal fluid into neuronal cells (C)</p> Signup and view all the answers

In which stage of glycolysis is ATP generated?

<p>Oxidoreduction-phosphorylation stage (A)</p> Signup and view all the answers

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

<p>GLUT2 (B)</p> Signup and view all the answers

What is the primary function of GLUT4 in the body?

<p>To facilitate glucose uptake in adipose tissue and muscle cells (A)</p> Signup and view all the answers

What is the role of GLUT3 in the brain?

<p>To transport glucose into brain cells (C)</p> Signup and view all the answers

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

<p>It destabilizes glucose, facilitating its further metabolism (D)</p> Signup and view all the answers

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

<p>Decreased insulin secretion (D)</p> 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?

<p>Hexokinase (A)</p> 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?

<p>Fructose 6-phosphate is phosphorylated to form fructose 1,6-bisphosphate (D)</p> Signup and view all the answers

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