Download 1. Metabolism refers to A) pathways of chemical reactions that build

1. Metabolism refers to
A) pathways of chemical reactions that build compounds.
B) the glycolysis pathway.
C) the entire network of chemical processes involved in maintaining life and encompasses all of the
sequences of chemical reactions that occur in the body.
D) the process of photosynthesis.
2. The original source of all our energy is:
A) plants.
B) carbon dioxide.
C) sunlight.
D) oxygen.
3. When a cell needs energy:
A) ATP releases a phosphate group and becomes ADP.
B) ADP releases a phosphate group and becomes ATP.
C) ATP gains a phosphate group and becomes ADP.
D) ADP gains a phosphate group and becomes ATP.
4. In metabolism, glucose is degraded to carbon dioxide and water. The carbon dioxide is produced in:
A) glycolysis.
B) the electron transport chain.
C) the red blood cells.
D) the citric acid cycle.
5. What is the net production of ATP in glycolysis?
A) 6
B) 4
C) 2
D) ATP is not produced
6. When glucose is split in glycolysis, it eventually forms two molecules of:
A) acetate.
B) glycerol.
C) pyruvate.
D) water.
7. Which pathway ends with the production of two units of pyruvate?
A) electron transport chain
B) anaerobic glycolysis
C) citric acid cycle
D) aerobic glycolysis
8. In the electron transport chain:
A) carbon dioxide is produced.
B) water is produced.
C) glucose is produced.
D) ketones are produced.
9. Which of the following metabolic pathways occur(s) in the cytoplasm of the cell?
A) Glycolysis
B) Fermentation
C) Krebs cycle
D) Electron transport chain
10. The oxygen that organisms need to live is used exclusively in which of the metabolic pathways listed
below?
I. Glycolysis
II. Fermentation
III. Krebs cycle
IV. Electron transport chain
A) I only
B) II only
C) IV only
D) III only
11. Electrons stripped from glucose during glycolysis and the Krebs cycle are transported to the electron
transport chain by ...
A) ADP.
B) CO2.
C) ATP.
D) reduced coenzymes
12. At the end of the electron transport chain, the final acceptor of the electrons is ______, which
produces a molecule of ______.
A) CO2 / O2
B) NAD+ / NADH
C) ADP / ATP
D) O2 / H2O
13. Which of these could be described as "redox reaction"?
A) a reaction in which one molecule is reduced and another molecule is oxidized
B) a reaction in which one molecule gains hydrogen and another molecule loses hydrogen
C) a reaction in which one molecule gains an oxygen atom and another molecule loses an oxygen atom
D) Both A and B are correct.
E) A, B, and C are correct.
14. The process of cellular respiration can be written as a chemical equation. Which of these equations
best represents the process of cellular respiration?
A) C6H12O6 +O2 + ATP
B) C6H12O6 + CO2 + ADP
C) C6H12O6 + O2 + ADP
D) CO2 + H2O + ATP
CO2 + H2O + ADP
O2 + H2O + ATP
CO2 + H2O + ATP
C6H12O6 + O2 + ADP
15. Glucose is converted to pyruvate in
A) glycolysis.
B) Krebs cycle.
C) aerobic respiration.
D) alcoholic fermentation.
16. Carbon dioxide is formed in
A) glycolysis.
B) Krebs cycle.
C) aerobic respiration.
D) alcoholic fermentation.
E) none of the above.
17. The complete oxidation of one glucose molecule produces ___ molecules of ATP.
A) 3
B) 8
C) 38
D) 42
E) 82