8. Keeping in mind that the mouth is the first site of chemical digestion in a h

Question

8. Keeping in mind that the mouth is the first site of chemical digestion in a human, your saliva starts the process of breaking down the food you eat. What organelle do you think would be numerous inside the cells of your mouth?

9. What is the term used for the metabolic pathway in which glucose (C6H12O6) is degraded to carbon dioxide (CO2) and water?

A. cellular respiration
B. glycolysis
C. fermentation
D. citric acid cycle
E. oxidative phosphorylation

10. Which of the following statements about NAD+ is false?

A. NAD+ is reduced to NADH during both glycolysis and the citric acid cycle.
B. NAD+ has more chemical energy than NADH.
C. NAD+ is reduced by the action of dehydrogenases.
D. NAD+ can receive electrons for use in oxidative phosphorylation.
E. In the absence of NAD+, glycolysis cannot function.

11. Starting with one molecule of glucose, the "net" products of glycolysis are:

A. 2 NAD+, 2 H+, 2 pyruvate, 2 ATP, and 2 H2O.
B. 2 NADH, 2 pyruvate, and 2 ATP.
C. 2 FADH2, 2 pyruvate, 4 ATP, and 2 H2O.
D. 6 CO2, 6 H2O, 2 ATP, and 2 pyruvate.
E. 6 CO2, 6 H2O, 36 ATP, and 2 citrate.

12. Where does glycolysis take place? Can it take place with or without oxygen?

Explanation / Answer

8) Ribosomes to make all of the saliva 9) Cellular Respiration 10) NAD+ has more chemical energy than NADH 11) 2 NADH, 2 H+, 2 pyruvate, 2 ATP, and 2 H2O Because Everything basically splits into 2 molecules after the energy investment phase. 12) glycolysis takes place In the cytosol Krebs cycle and electon transport takes place Inside an intracellular inclusion known as a mitochondria.

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