Gluconeogenesis and Alternative Brain Energy Sources Quiz
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Questions and Answers

Which organ(s) rely solely on glucose as an energy source?

  • Heart
  • Liver
  • Muscles
  • Brain, testes, erythrocytes, and kidney medulla (correct)

What is gluconeogenesis?

  • The conversion of glucose into glycogen
  • The synthesis of glucose from other organic compounds (correct)
  • The storage of glucose in the liver and muscles
  • The breakdown of glucose into other organic compounds

What is the alternative energy source for the brain during starvation?

  • Fatty acids
  • Glucose
  • Proteins
  • Ketone bodies (correct)

Which enzymes are required for gluconeogenesis?

<p>Both mitochondrial and cytosolic enzymes (A)</p> Signup and view all the answers

What are some of the organic compounds that can be used for gluconeogenesis?

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

What is the function of gluconeogenesis?

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

Which organs can use ketone bodies as an energy source during starvation?

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

What is the role of glycogen degradation in maintaining blood glucose levels?

<p>To store glucose in the liver and muscles (D)</p> Signup and view all the answers

What happens to blood glucose levels during gluconeogenesis?

<p>They remain constant (C)</p> Signup and view all the answers

Which organs require glucose as their sole energy source?

<p>Brain, testes, erythrocytes, and kidney medulla (A)</p> Signup and view all the answers

Flashcards

What is Gluconeogenesis?

The synthesis of glucose from non-carbohydrate precursors.

Organs Reliant on Glucose

Brain, testes, erythrocytes (red blood cells), and kidney medulla.

Brain's Starvation Fuel

Ketone bodies.

Gluconeogenesis Enzymes

Mitochondrial and cytosolic enzymes.

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Gluconeogenesis Precursors

Lactate and oxaloacetate.

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Gluconeogenesis Function

To synthesize glucose from other organic compounds, maintaining blood glucose levels.

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Ketone Body Organ

Brain

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Glycogen's Role

To store glucose in the liver and muscles for later use.

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Blood Glucose During Gluconeogenesis

They remain constant.

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Organ Utilizes Ketone Bodies

Brain only.

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