Energy Generation in the Body: Electron Transport Chain and CAC

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Questions and Answers

Where does the electron transport chain take place in the cell?

  • Nucleus
  • Inner mitochondrial membrane (correct)
  • Cytoplasm
  • Endoplasmic reticulum

What is the main function of the electron transport chain?

  • Generation of ATP (correct)
  • Synthesis of glucose
  • Transport of genetic material
  • Production of enzymes

Which molecules donate electrons to the electron transport chain?

  • ATP and ADP
  • Glucose and fructose
  • NADH and FADH2 (correct)
  • NAD+ and FAD

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

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

Which organelle is vital for the functioning of the electron transport chain?

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

What is the role of the respiratory chain in the electron transport chain?

<p>Transferring electrons from substrates to molecular oxygen (A)</p> Signup and view all the answers

Where does the citric acid cycle take place?

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

What is the main function of the citric acid cycle?

<p>To completely oxidize Acetyl CoA to CO2 (A)</p> Signup and view all the answers

Which of the following is NOT an inhibitor of the citric acid cycle?

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

What process is responsible for the phosphorylation of ADP to ATP coupled to electron transfer from a substrate to molecular oxygen?

<p>Electron transport chain and oxidative phosphorylation (D)</p> Signup and view all the answers

Which theory explains how the electron transport chain and oxidative phosphorylation are coupled?

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

What are the electron donors in the electron transport chain?

<p>NADH, FADH2 (B)</p> Signup and view all the answers

What is the reservoir for oxidative phosphorylation according to the chemiosmotic theory?

<p>Transmembrane differences in proton concentration (D)</p> Signup and view all the answers

What is the main function of ATP synthase in oxidative phosphorylation?

<p>To phosphorylate ADP to ATP (C)</p> Signup and view all the answers

What drives the formation of ATP in oxidative phosphorylation according to the chemiosmotic theory?

<p>$H^+$ concentration gradient and charge separation (D)</p> Signup and view all the answers

How many protons are required to synthesize 1 ATP in oxidative phosphorylation?

<p>4 protons (C)</p> Signup and view all the answers

Which of the following does NOT generate ATP in the citric acid cycle?

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

What is the main function of the electron transport chain?

<p>To synthesize ATP (D)</p> Signup and view all the answers

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