Chapter 7: Mitochondria and Cellular Respiration
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Questions and Answers

What is the final electron acceptor in obligate anaerobes during anaerobic respiration?

  • Nitrogen
  • Carbon dioxide
  • Oxygen
  • Sulfate (correct)

Which process can human muscle cells switch to in the absence of oxygen?

  • Citric acid cycle
  • Glycolysis
  • Fermentation (correct)
  • Aerobic respiration

Which molecules are consumed as fuel in cellular respiration?

  • Fats only
  • Carbohydrates only
  • Proteins only
  • Carbohydrates, fats, and proteins (correct)

What becomes oxidized during cellular respiration?

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

What is the function of dehydrogenase in cellular respiration?

<p>Transfer of electrons to NADH (C)</p> Signup and view all the answers

What is the product of aerobic cellular respiration when oxygen is the final electron acceptor?

<p>$H2O$ (B)</p> Signup and view all the answers

Which process occurs in the absence of oxygen during cellular respiration?

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

Where does the citric acid cycle occur in eukaryotic cells?

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

What is the main function of the electron transport chain in cellular respiration?

<p>$ATP$ synthesis (D)</p> Signup and view all the answers

Which type of cells can't survive in the presence of oxygen?

<p>$Obligate$ anaerobes (A)</p> Signup and view all the answers

Where does glycolysis occur?

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

What is the final electron acceptor in the electron transport chain?

<p>Oxygen (O2) (C)</p> Signup and view all the answers

Which stage of respiration involves the formation of acetyl CoA?

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

What is the main function of ATP synthase in cellular respiration?

<p>To generate a proton gradient (B)</p> Signup and view all the answers

Where does oxidative phosphorylation take place in eukaryotic cells?

<p>Inner mitochondrial membrane (D)</p> Signup and view all the answers

Which molecule is NOT directly involved in the Citric Acid Cycle?

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

What is the function of coenzyme A in cellular respiration?

<p>To carry acetyl groups to the Citric Acid Cycle (D)</p> Signup and view all the answers

Which stage of respiration produces the most ATP?

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

Which stage of respiration produces the most ATP?

<p>Electron transport and produce ATP (Chemiosmosis) (A)</p> Signup and view all the answers

What is the main function of the electron transport chain in cellular respiration?

<p>To generate a proton gradient for ATP synthesis (C)</p> Signup and view all the answers

What is the final electron acceptor in aerobic cellular respiration?

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

Where does glycolysis occur?

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

What is the product of aerobic cellular respiration when oxygen is the final electron acceptor?

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

Which stage of respiration involves the formation of acetyl CoA?

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

What becomes oxidized during cellular respiration?

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

What is the function of coenzyme A in cellular respiration?

<p>$To$ $oxidize$ $pyruvate$ $and$ $transfer$ $the$ $acetyl$ $group$ $to$ $the$ $Citric$ $Acid$ $Cycle$ (B)</p> Signup and view all the answers

What is the main function of ATP synthase in cellular respiration?

<p>$To$ $convert$ $ADP$ $and$ $Pi$ $into$ $ATP$ (C)</p> Signup and view all the answers

What is the function of dehydrogenase in cellular respiration?

<p>To carry electrons to the electron transport chain (A)</p> Signup and view all the answers

What is the final electron acceptor in anaerobic respiration for obligate anaerobes?

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

What is the main difference between obligate anaerobes and facultative anaerobes?

<p>Facultative anaerobes can survive with or without oxygen, while obligate anaerobes can only survive in the presence of oxygen. (D)</p> Signup and view all the answers

Which molecule is oxidized during cellular respiration?

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

What is the primary function of dehydrogenase in cellular respiration?

<p>To oxidize NAD+ to NADH (D)</p> Signup and view all the answers

Where does the citric acid cycle occur in eukaryotic cells?

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

Which process occurs in the absence of oxygen during cellular respiration?

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

What is the function of coenzyme A in cellular respiration?

<p>To transport acetyl groups to the citric acid cycle (A)</p> Signup and view all the answers

What becomes reduced during cellular respiration?

<p>$NAD^+$ (C)</p> Signup and view all the answers

What is the main function of ATP synthase in cellular respiration?

<p>To convert ADP to ATP using the proton gradient (D)</p> Signup and view all the answers

What is the primary function of the electron transport chain in cellular respiration?

<p>To generate a proton gradient for ATP synthesis (C)</p> Signup and view all the answers

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