alleryStart learning →What change takes place during the eighth step of glycolysis?
AA water molecule is added to the sugar
BThe phosphate moves to a different carbon
CA carboxyl group leaves as carbon dioxide
DTwo electrons are handed to a carrier
Answer & Solution
Correct answer: B. The phosphate moves to a different carbon
1. In step eight the remaining phosphate group in 3-phosphoglycerate is relocated.
2. It moves from the third carbon to the second carbon, producing 2-phosphoglycerate.
3. The product is an isomer of the starting molecule and the catalysing enzyme is a mutase.
4. Water leaves at step nine rather than being added at step eight, so the hydration option is misplaced.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 7 "Cellular Respiration", section 7.2 Glycolysis_
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