Chapter 7 Cellular Respiration

The cellular respiration process involves:

• Synthesis of Glucose from CO2 and water in presence of light

• Synthesis of Proteins from amino acids

• Breakdown of Glucose into CO2, water and energy

• All of the listed options

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Which molecule is the most oxidized form of cellular respiration products?

• Pyruvate

• FADH

• NADH

• H2O

• CO2

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Which statement correctly describes REDOX reactions?

• Oxidation is gain of electrons and Reduction is loss of electrons

• Both Oxidation and Reduction involves loss of electrons

• Oxidation is loss of electrons and Reduction is gain of electrons

• Oxidation process involves removal of electrons from NAD+ to form NADH

Select the electron carriers that capture energy released from Glucose breakdown:

• NAD+

• ADP+Pi

• Pyruvate

• FAD

• ATP

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Cellular respiration involves oxidation of glucose in a series of stages. Which among these given stages’ forms part of cellular respiration process?

• Glycolysis

• Glycolysis and Pyruvate oxidation

• Glycolysis, Pyruvate oxidation, Citric acid cycle and Oxidative phosphorylation

• Citric acid cycle and Oxidative Phosphorylation

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ATP produced by substrate-level phosphorylation (during Glycolysis and Citric acid cycle) are more as compared to ATP produced during the oxidative phosphorylation.

• True

• False

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Which stage of the cellular respiration is common to both bacteria (prokaryotes) and plants (eukaryotes)?

• Pyruvate oxidation

• Ethanol fermentation

• Glycolysis

• Citric acid cycle

• Oxidative phosphorylation

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Write down the location and outputs (products) for each of the following stages of cellular respiration involving one molecule of Glucose oxidation:

• a. Glycolysis; Location: Cytoplasm; Outputs= 2Pyruvate, 2NADH, net 2ATP b. Pyruvate oxidation; Location: Mitochondria matrix; Outputs= 2Acetyl CoA, 2NADH, 2CO2 c. Citric acid cycle; Location: Mitochondria matrix; Outputs= 6NADH, 2FADH2, 4CO2, 2ATP, GTP d. Oxidative phosphorylation; Location: Mitochondria inner membrane; Outputs= H2O and ~28 ATP

• a. Glycolysis; Location: Mitochondria; Outputs= 2Pyruvate, 2FADH2, net 2ATP b. Pyruvate oxidation; Location: Cytoplasm; Outputs= 2Acetyl CoA, 2NADH, 2CO2 c. Citric acid cycle; Location: Mitochondria matrix; Outputs= 6NADH, 2FADH2, 2CO2, 2ATP, GTP d. Oxidative phosphorylation; Location: Mitochondria outer membrane; Outputs= H2O and ~28 ATP

• a. Glycolysis; Location: Cytoplasm; Outputs= 2Pyruvate, 2NADH, net 2ATP b. Pyruvate oxidation; Location: Mitochondria matrix; Outputs= 2Acetyl CoA, 2FADH2, 2CO2 c. Citric acid cycle; Location: Mitochondria matrix; Outputs= 6NADH, 2FADH2, 4CO2, 2ATP, GTP d. Oxidative phosphorylation; Location: Mitochondria inner membrane; Outputs= CO2 and ~28 ATP

• a. Glycolysis; Location: Cytoplasm; Outputs= 2Pyruvate, 2NADH, net 2ATP b. Pyruvate oxidation; Location: Mitochondria matrix; Outputs= 2Acetyl CoA, 2NADH, 2CO2 c. Citric acid cycle; Location: Cytoplasm; Outputs= 6NADH, 2FADH2, 4CO2, 2ATP, GTP d. Oxidative phosphorylation; Location: Mitochondria inner membrane; Outputs= H2O and ~28 ATP

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Which stage/s of cellular respiration produces ATP using substrate-level phosphorylation?

• Glycolysis

• Glycolysis, Pyruvate oxidation and Citric acid cycle

• Glycolysis and Citric acid cycle

• Glycolysis, Citric acid cycle and Oxidative phosphorylation

Among the given options, choose the molecule that stores the most potential energy:

• NADH

• FADH2

• ATP

• NAD+