Carbohydrate Metabolism: Glycolysis Process Quiz
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Questions and Answers

Which enzyme catalyzes the first step in glycolysis?

  • Kinasehex
  • Hexokinase (correct)
  • Glucokinase
  • Glucosephosphatase

What is the major form of hexokinase present in all cells?

  • Glucokinase
  • Glucohex
  • Kinasehex
  • Hexokinase (correct)

What is the Km value for hexokinase?

  • 100 µM (correct)
  • 1,000 µM
  • 1 µM
  • 10,000 µM

Under what condition does glucokinase function in the liver?

<p>High glucose levels (A)</p> Signup and view all the answers

How is hexokinase regulated?

<p>Directly inhibited by glucose-6-P (B)</p> Signup and view all the answers

Which molecule allosterically inhibits Phosphofructokinase (PFK)?

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

What is the major activator of Phosphofructokinase (PFK)?

<p>Fructose-1,6-bisphosphate (C)</p> Signup and view all the answers

Which molecule allosterically activates Pyruvate Kinase?

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

What does 2,3-BPG (for hemoglobin) do?

<p>Acts to maintain hemoglobin in low oxygen affinity form (D)</p> Signup and view all the answers

How is Hexokinase inhibited in glycolysis?

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

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