Download Biology 2 –Quiz 7 Cellular Respiration Name: Date: For the

Biology 2 –Quiz 7 Cellular Respiration
Name:
Date:
For the following questions, choose the one best answer.
1. In the reaction C6H12O6 + 6 O2 → 6CO2 + 6H2O
a. Oxygen becomes reduced
b. Glucose becomes reduced
c. Oxygen becomes oxidized
d. Water is a reducing agent
2. Which of the following is not true of oxidative phosphorylation?
a. It involves the redox reactions of the electron transport chain
b. It involves an ATP synthase located in the inner mitochondrial membrane
c. It uses oxygen as the initial electron donor
d. It is an example of chemiosmosis
3. The net products of glycolysis are
a. 2 ATP, 2 CO2, 2 Ethanol
b. 2 ATP, 2 NAD+, 2 Acetic Acid
c. 2 ATP, 2 NADH, 2 Pyruvic Acid
d. 38 ATP, 6 CO2, 6 H2O
4. The net products of alcoholic fermentation are
a. 2 ATP, 2 CO2, 2 Ethanol
b. 2 ATP, 2 NAD+, 2 Acetic Acid
c. 2 ATP, 2 NADH, 2 Pyruvic Acid
d. 38 ATP, 6 CO2, 6 H2O
5. How many molecules of CO2 are generated for each molecule of acetyl CoA introduced into the
citric acid cycle?
a. 1
b. 2
c. 3
d. 6
6. In chemiosmosis
a. ATP production is linked to the proton gradient established by the electron transport
chain.
b. The flow of hydrogen protons through ATP synthase from the matrix to the
intermembrane space drives the production of ATP(the phosphorylation of ADP)
c. The production of water in the matrix by reduction of oxygen leads to a net flow of
water out of the mitochondria.
d. The energy released by redox reactions in the electron transport chain is transferred as
a phosphate to ADP.
7. Which of the following reactions is incorrectly paired with its location?
a. ATP synthesis – inner membrane of the mitochondria
b. Fermentation – cytoplasm
c. Glycolysis – cytoplasm
d. Citric acid cycle – cristae of the mitochondrion
Biology 2 –Quiz 7 Cellular Respiration
Name:
Date:
8. When glucose is oxidized to CO2 and water, approximately 40% of its energy is transferred to
a. Heat
b. ATP
c. Water
d. Acetyl Co A
9. What do muscle cells in oxygen deprivation produce?
a. ATP, alcohol, and recycled NAD+
b. CO2 and Lactic Acid
c. ATP, Lactic Acid, and recycled NAD+
d. ATP, lactic acid, and CO2
10. Glucose, made from six radioactively labeled carbon atoms, is fed to yeast cells in the absence of
oxygen. How many molecules of radioactive alcohol (C2H5OH) are formed from each molecule
of glucose?
a. 0
b. 1
c. 2
d. 6
11. Which of the following produces the most ATP per gram?
a. Glucose, because it is the starting place for glycolysis
b. Starch, because it is a polymer of glucose
c. Fats because they are highly reduced compounds
d. Proteins because the energy is stored in their tertiary structure
12. Cyanide is poison that blocks the passage of electrons along the electron transport chain. Which
of the following is a metabolic effect of the poison?
a. Electrons are passed directly to oxygen, causing cells to explode
b. Alcohol would build up in the cells
c. The pH of the intermembrane space is much lower than normal
d. No proton gradient would be produced, and ATP synthesis would stop.
13. Why is glycolysis considered one of the first metabolic pathways to have evolved?
a. It relies on fermentation, which is characteristic of bacteria.
b. It is found only in prokaryotes, whereas eukaryotes use mitochondria to produce ATP.
c. It produces much less ATP than the electron transport chain.
d. It is present in all cells, is located in the cytoplasm, and does not involve O2.
14. List the order of the following compounds as you first encounter them during the process of
cellular respiration.
Biology 2 –Quiz 7 Cellular Respiration
1.
2.
3.
4.
5.
a.
b.
c.
d.
Name:
Pyruvate
Glucose
Citric acid
Acetyl Co A
Glyceraldehyde-3-phosphate
5, 3, 1, 2, 4
2, 5, 1, 4, 3
2, 1, 5, 4, 3
5, 2, 1, 3, 4
15. What is the role of oxygen in cellular respiration?
a. It provides electrons to the electron transport chain
b. It is the final electron acceptor for the electron transport chain
c. It provides the activation energy needed for oxidation to occur
d. It combines with carbon to form CO2
Date: