BIO 353 Cell Bio Exam Version A Exam #1 (100 Points) Complete Questions And Answers 2026 Updates

BIO 353 Cell Bio Exam Version A Exam #1 (100 Points) Complete Questions And Answers 2026 Updates

This is a closed-book examination. Collaboration, of the use of books, notes, of handouts, is not allowed.
Please turn off and put away all cell phones, pagers, and other electronic devices. If you finish the exam
early, you may leave the room quietly.
This exam consists of 50 multiple choice questions. Select the best answer to each question and enter
your answer on a pink Scantron form. Be sure to indicate on the Scantron form whether you have version A
or version B of the exam. If you make a mistake, be careful to erase the mistake completely.
1. Where in the cell does the citric acid cycle occur?
a. Cytosol
b. Mitochondrial Matrix
c. Intermembrane Space
d. Mitochondrial Stroma
2. Which of the following best describes the products of the catabolism of glucose (C6H12O6) through
glycolysis and the Citric Acid Cycle?
a. 6 CO2 + 6 O2
b. 3 CO2 + 3 H2O
c. 3 CO2 + 1 lactate
d. 6 CO2 + 6 H2O
3. During β-oxidation, the fatty acid chains of triacylglycerols are degraded to form many molecules of:
a. acetyl-CoA
b. glucose-1-phosphate
c. pyruvate
d. oxaloacetate
4. In the first step of the citric acid cycle, which molecule combines with the carbons from Acetyl CoA to
form citrate?
a. Fumarate
b. Malate
c. Oxaloacetate
d. Succinate
5. In the presence of oxygen, what happens to pyruvate?
a. It is converted to Acetyl CoA and transported into mitochondria
b. It is converted to ethanol to regenerate NAD+
c. It is converted to lactate to regenerate NAD+
d. It is attached to carnitine so that it can be imported into mitochondria

Questions 6-7 refer to the following reaction:
6. Which enzyme catalyzes the reaction shown above?
a. Succinate dehydrogenase
b. Succinyl CoA Synthetase
c. Fumarase
d. Fumarate dehydrogenase
7. Where in the cell does this reaction occur?
a. Cytosol
b. Mitochondrial matrix
c. Inner mitochondrial membrane
d. Thylakoid membrane
8. Which of the following steps or processes in aerobic respiration include the production of carbon
dioxide?
a. breakdown of glycogen
b. glycolysis
c. oxidative phosphorylation
d. conversion of pyruvate to acetyl CoA
9. Which of the following statements best describes the process of chemiosmosis?
a. The movement of H+
ions across a membrane is used to facilitate the transfer of electrons from
NADH to oxygen.
b. The transfer of electrons through an electron transport chains results in the reduction of water to
form oxygen.
c. The transfer of electrons from NADH to oxygen is used to directly drive the attachment of
phosphate to ADP to form ATP.
d. The formation of ATP depends on the movement of H
+
ions across a membrane.
10. What are the two processes that make up oxidative phosphorylation?
a. Chemiosmosis and the electron transport chain
b. Glycolysis and the citric acid cycle
c. Beta-oxidation and photosynthesis 

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