Glycolysis and Cellular Respiration Flashcards

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Questions and Answers

What is glycolysis?

  • The absorption of sunlight
  • The process of photosynthesis
  • The conversion of glucose into 2 3-C Pyruvic Acid/Pyruvate (correct)
  • The breakdown of proteins

Which of the following are products of glycolysis?

  • 4 ATP
  • 2 NADH
  • 2 ATP used
  • All of the above (correct)

What is aerobic respiration?

The conversion of pyruvic acid to energy

Where does aerobic respiration occur?

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

Anaerobic pathways require oxygen.

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

What is the total net yield from glycolysis?

<p>2 ATP, 2 NADH, 2 Pyruvic Acids</p> Signup and view all the answers

Which of the following is a location for the Krebs Cycle?

<p>Matrix of mitochondria (C)</p> Signup and view all the answers

What is produced from the Krebs Cycle?

<p>10 NADH, 2 FADH2, 4 ATP</p> Signup and view all the answers

What is the net gain of ATP in the Electron Transport Chain?

<p>36 ATP</p> Signup and view all the answers

What are the main components involved in the Electron Transport Chain?

<p>All of the above (D)</p> Signup and view all the answers

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Study Notes

Glycolysis

  • Converts glucose (6-C) into 2 pyruvate molecules (3-C).
  • Produces 4 ATP and 2 NADH while using 2 ATP to start the process.
  • Takes place in the cytosol of all organisms.
  • Anaerobic process, does not require oxygen.

Aerobic Respiration

  • Involves conversion of pyruvic acid into energy.
  • Occurs in the mitochondria of eukaryotic cells.
  • Essential for all heterotrophs and requires oxygen.

Anaerobic Fermentation

  • Lactic acid fermentation converts pyruvic acid to lactic acid, occurring when oxygen is consumed in muscle cells.
  • Alcoholic fermentation converts pyruvic acid to ethyl alcohol and CO2, significant in wine, beer, and bread production.
  • No additional ATP is produced during fermentation.

Total NET Yield from Glycolysis

  • From one glucose breakdown (C6H12O6), yields 2 ATP, 2 NADH, and 2 pyruvic acids.

Krebs Cycle

  • Takes place in the matrix of mitochondria.
  • 2-C Acetyl CoA enters and combines with 4-C oxaloacetic acid to form 6-C citric acid.
  • After decarboxylation, produces NADH and ATP and forms FADH2.
  • From one cycle: produces 1 ATP, 3 NADH, and 1 FADH2.

Products of the Krebs Cycle

  • Generates 10 NADH and 2 FADH2 along with a total of 4 ATP from all steps combined.

Electron Transport Chain (ETC)

  • Located in the cristae (inner membrane) of mitochondria.
  • Processes NADH and FADH2 to produce ATP.
  • Yields 30 ATP from NADH and 4 ATP from FADH2.
  • Total net gain from the entire process amounts to 36 ATP.

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