Chapter 16 & 17 Quiz
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Questions and Answers

Which molecule is produced during glycolysis?

  • Dihydroxyacetone phosphate
  • Glucose
  • ATP
  • Pyruvate (correct)

What is the primary function of glycolysis?

  • Production of glucose
  • Conversion of pyruvate
  • Generation of ATP (correct)
  • Building blocks for biosynthesis

What are the byproducts of glycolysis used for?

  • Biosynthesis (correct)
  • Energy production
  • Conversion of glucose
  • ATP generation

What is the first stage of glycolysis?

<p>Conversion of glucose into Glyceraldehyde 3-phosphate (C)</p> Signup and view all the answers

How many molecules of pyruvate are produced during glycolysis?

<p>2 (A)</p> Signup and view all the answers

What is the end product of glycolysis?

<p>Pyruvate (A)</p> Signup and view all the answers

What is the function of ATP in glycolysis?

<p>Generation of ATP (D)</p> Signup and view all the answers

What are the building blocks provided by the byproducts of glycolysis used for?

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

What are the two molecules that can be produced during the conversion of glucose in the first stage of glycolysis?

<p>Glyceraldehyde 3-phosphate and Dihydroxyacetone phosphate (A)</p> Signup and view all the answers

What is the main purpose of glycolysis?

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

Which of the following is an irreversible reaction in glycolysis?

<p>Conversion of glyceraldehyde 3-phosphate to 1,3-bisphosphoglycerate (A)</p> Signup and view all the answers

What is the net ATP production per glucose molecule in glycolysis?

<p>+2 ATP (D)</p> Signup and view all the answers

Which enzyme in glycolysis is inhibited by its product, glucose 6-phosphate?

<p>Hexokinase (A)</p> Signup and view all the answers

What is the main site of gluconeogenesis?

<p>Liver cells (D)</p> Signup and view all the answers

Which of the following is an energetically favorable reaction in gluconeogenesis?

<p>Conversion of pyruvate to oxaloacetate (A)</p> Signup and view all the answers

What is the reciprocal regulation between glycolysis and gluconeogenesis?

<p>When glucose is abundant, glycolysis is active. When glucose is scarce, gluconeogenesis is active. (B)</p> Signup and view all the answers

What is the role of lactate in contracting skeletal muscle?

<p>It generates ATP in the absence of oxygen. (A)</p> Signup and view all the answers

Which enzyme in liver cells converts some fructose 6-phosphate into fructose 2,6-bisphosphate, a potent activator of phosphofructokinase 1 (PFK1)?

<p>Phosphofructokinase 2 (PFK2) (D)</p> Signup and view all the answers

What is the function of the second pyruvate kinase isozyme in liver cells?

<p>It converts pyruvate to acetyl CoA. (A)</p> Signup and view all the answers

What is the purpose of the conversion of pyruvate to acetyl CoA in the liver?

<p>To synthesize glucose (B)</p> Signup and view all the answers

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