Citric Acid Cycle Quiz

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Questions and Answers

What is primarily formed in the first step of the citric acid cycle?

  • Oxaloacetate
  • Acetyl CoA
  • Citrate (correct)
  • Fumarate

Which term is NOT a common name for the citric acid cycle?

  • Respiratory cycle (correct)
  • Citric acid cycle
  • Krebs cycle
  • TCA cycle

In which part of the cell does the citric acid cycle occur?

  • Cytoplasm
  • Cell membrane
  • Mitochondrial matrix (correct)
  • Nucleus

What type of energy harvesting molecules are primarily produced during the citric acid cycle?

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

What happens to the carbon atoms in the citrate during the citric acid cycle?

<p>They are released as carbon dioxide (A)</p> Signup and view all the answers

Which of the following molecules serves as the starting material for the citric acid cycle?

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

The citric acid cycle is crucial for which biological process?

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

Which compound acts as an acceptor for the acetyl CoA in the citric acid cycle?

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

Flashcards

Citric Acid Cycle

A central part of cellular respiration, converting acetyl CoA into energy-carrying molecules.

TCA Cycle

Another name for the citric acid cycle, highlighting the three carboxyl groups in its intermediates.

Krebs Cycle

The citric acid cycle, named after its discoverer, Hans Krebs.

Acetyl CoA

A molecule derived from glucose, starting material for the citric acid cycle.

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Oxaloacetate

Four-carbon molecule that combines with acetyl CoA to start the cycle.

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Citrate

The six-carbon molecule formed when acetyl CoA combines with oxaloacetate.

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Mitochondrial Matrix

Location within the cell where the citric acid cycle takes place.

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Carbon Dioxide

Released as a byproduct during the cycle.

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Cellular Respiration

The process where cells produce energy through the oxidation of glucose.

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NADH and FADH2

Energy-carrying molecules produced by redox reactions in the citric acid cycle.

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ATP

A crucial energy molecule produced in the citric acid cycle.

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