PORTAGE LEARNING EXAM zm zm
Exam Solution
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BIO exam 4 2026 A+ GRADE ASSURED COMPLETE SOLU
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TIONS AND VERIFIED ANSWERS (45CC9) zm zm zm zm
QUESTION 1 zm
1. Where does the citric acid cycle occur?
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A. In the thylakoid membrane of a chloroplast
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B. In the stroma of a chloroplast
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C. In the cytoplasm of a cell
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D. In the inner mitochondrial membrane
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E. In the matrix of a mitochondria.
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ANSWER
E
QUESTION 2 zm
2. During cellular respiration protons are actively transported
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A. from the stroma into the thylakoid space.
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B. from the thylakoid space into the stroma.
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C. from the matrix into the inner membrane space.
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D. from the inner membrane space into the matrix.
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ANSWER
C
QUESTION 3 zm
3. What is true of the electron transport chain?
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A. It supplies the energy needed to pump protons.
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B. It directly brings about the reduction of carbon dioxide.
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C. It directly brings about the reduction of water.
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D. It directly brings about the regeneration of RuBP.
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ANSWER
, A
QUESTION 4 zm
4. Which of the following best characterizes oxaloacetate?
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A. It is the 4-carbon pyruvate acceptor.
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B. It is a 4-carbon acetyl acceptor molecule.
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C. It contains high-energy electrons that once were carried by NADPH.
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D. It is mainly found in chloroplasts.
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E. It catalyzes the reaction of carbon dioxide with RuBP.
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ANSWER
B
QUESTION 5 zm
5. What is one possible use of G3P (glyceraldehyde-3-phosphate) in photosynthesis?
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A. The production of ATP
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B. The production of glucose
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C. The regeneration of oxaloacetate
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D. The production of pyruvate
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ANSWER
B
QUESTION 6 zm
6. Which of the following is an output of glycolysis?
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A. RuBP
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B. pyruvate
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C. glucose
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D. oxaloacetate
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ANSWER
B
QUESTION 7 zm
7. Which of the following is true concerning glycolysis?
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A. It occurs in the matrix of the mitochondria.
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B. The end product is acetyl-CoA.
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C. Oxyloacetate is regenerated at the end.
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D. None of the above
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Exam Solution
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BIO exam 4 2026 A+ GRADE ASSURED COMPLETE SOLU
zm zm zm zm zm zm zm zm
TIONS AND VERIFIED ANSWERS (45CC9) zm zm zm zm
QUESTION 1 zm
1. Where does the citric acid cycle occur?
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A. In the thylakoid membrane of a chloroplast
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B. In the stroma of a chloroplast
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C. In the cytoplasm of a cell
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D. In the inner mitochondrial membrane
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E. In the matrix of a mitochondria.
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ANSWER
E
QUESTION 2 zm
2. During cellular respiration protons are actively transported
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A. from the stroma into the thylakoid space.
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B. from the thylakoid space into the stroma.
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C. from the matrix into the inner membrane space.
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D. from the inner membrane space into the matrix.
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ANSWER
C
QUESTION 3 zm
3. What is true of the electron transport chain?
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A. It supplies the energy needed to pump protons.
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B. It directly brings about the reduction of carbon dioxide.
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C. It directly brings about the reduction of water.
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D. It directly brings about the regeneration of RuBP.
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ANSWER
, A
QUESTION 4 zm
4. Which of the following best characterizes oxaloacetate?
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A. It is the 4-carbon pyruvate acceptor.
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B. It is a 4-carbon acetyl acceptor molecule.
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C. It contains high-energy electrons that once were carried by NADPH.
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D. It is mainly found in chloroplasts.
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E. It catalyzes the reaction of carbon dioxide with RuBP.
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ANSWER
B
QUESTION 5 zm
5. What is one possible use of G3P (glyceraldehyde-3-phosphate) in photosynthesis?
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A. The production of ATP
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B. The production of glucose
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C. The regeneration of oxaloacetate
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D. The production of pyruvate
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ANSWER
B
QUESTION 6 zm
6. Which of the following is an output of glycolysis?
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A. RuBP
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B. pyruvate
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C. glucose
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D. oxaloacetate
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ANSWER
B
QUESTION 7 zm
7. Which of the following is true concerning glycolysis?
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A. It occurs in the matrix of the mitochondria.
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B. The end product is acetyl-CoA.
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C. Oxyloacetate is regenerated at the end.
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D. None of the above
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