The structure labelled Y is where
A - VCE - SSCE Biology - Question 10 - 2017 - Paper 1
Question 10
The structure labelled Y is where
A. glucose enters glycolysis.
B. NAD+ is converted into NADH.
C. the majority of ATP is produced in the cell.
D. pyruvate is broken... show full transcript
Worked Solution & Example Answer:The structure labelled Y is where
A - VCE - SSCE Biology - Question 10 - 2017 - Paper 1
Step 1
A. glucose enters glycolysis.
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Answer
This statement describes the initial stage of the glycolytic pathway, but it is not correct in the context of structure Y.
Step 2
B. NAD+ is converted into NADH.
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Answer
While NADH is indeed generated during glycolysis, this process specifically occurs during later stages, not at the site represented by Y.
Step 3
C. the majority of ATP is produced in the cell.
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Answer
This is the correct answer. The majority of ATP is produced during oxidative phosphorylation in the mitochondria, which occurs after the glycolysis stage that Y represents.
Step 4
D. pyruvate is broken down, releasing carbon dioxide.
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Answer
This process occurs after glycolysis when pyruvate is further oxidized in the citric acid cycle, making this statement inaccurate for structure Y.
