Respiration in Plants

Topics in this chapter

• Respiration Overview
• Glycolysis and ATP Formation
• Link Reaction and Krebs Cycle
• Electron Transport and Oxidative Phosphorylation
• Fermentation and Alternative Pathways
• Respiratory Quotient and Substrates

Cheat sheet

Practice questions

1. Question 1Q-45203C

   Which of the following molecules acts as the ultimate electron acceptor in aerobic respiration?

   1. A.Carbon dioxide
   2. B.Water
   3. C.Oxygen
   4. D.ATP
   See the answer and solution
2. Question 2Q-B423D4

   The direct synthesis of ATP in glycolysis occurs by which of the following mechanisms?

   1. A.Oxidative phosphorylation
   2. B.Photophosphorylation
   3. C.Substrate-level phosphorylation
   4. D.Chemiosmosis
   See the answer and solution
3. Question 3Q-65A657

   How many molecules of net ATP are produced directly from one molecule of glucose during glycolysis alone (excluding subsequent oxidative phosphorylation)?

   1. A.2
   2. B.4
   3. C.38
   4. D.8
   See the answer and solution
4. Question 4Q-7F16AD

   Where does the process of glycolysis take place inside a plant cell?

   1. A.Mitochondrial matrix
   2. B.Inner mitochondrial membrane
   3. C.Cytoplasm (Cytosol)
   4. D.Thylakoid lumen
   See the answer and solution
5. Question 5Q-C8A1E0

   During alcoholic fermentation, pyruvate is converted to ethanol and carbon dioxide. Which enzyme catalyzes the decarboxylation of pyruvate?

   1. A.Pyruvate dehydrogenase
   2. B.Pyruvate decarboxylase
   3. C.Alcohol dehydrogenase
   4. D.Lactate dehydrogenase
   See the answer and solution