Which one of the following is a correct statement?
Pathway 2 releases oxygen as a by-product - VCE - SSCE Biology - Question 5 - 2020 - Paper 1
Question 5
Which one of the following is a correct statement?
Pathway 2 releases oxygen as a by-product.
Pathway 1 requires carbon dioxide as an input.
ATP is produced in Pathw... show full transcript
Worked Solution & Example Answer:Which one of the following is a correct statement?
Pathway 2 releases oxygen as a by-product - VCE - SSCE Biology - Question 5 - 2020 - Paper 1
Step 1
Pathway 2 releases oxygen as a by-product.
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Answer
This statement is incorrect because Pathway 2 does not release oxygen as a by-product. Typically, oxygen is a by-product of photosynthesis, not of metabolic pathways that produce NADH.
Step 2
Pathway 1 requires carbon dioxide as an input.
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Answer
This statement is also incorrect. Pathway 1, which may refer to glycolysis, does not use carbon dioxide. Instead, it primarily utilizes glucose as a substrate.
Step 3
ATP is produced in Pathway 1 and is used by the cell as an energy source.
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Answer
This statement is correct. Pathway 1 (commonly glycolysis) produces ATP, which serves as an immediate source of energy for cellular activities.
Step 4
NADH created in Pathway 2 carries electrons into the electron transport chain.
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Answer
This statement is also correct, but since it depends on the context, it does not address if it is the only true statement. NADH is indeed a crucial electron carrier in cellular respiration.
