When a Suspension of Algae Is Incubated in a Flask

question 82

Multiple Choice

When a suspension of algae is incubated in a flask in the presence of light and CO₂ and then transferred to the dark,the reduction of 3-phosphoglycerate to glyceraldehyde 3-phosphate is blocked.This reaction stops in the dark because

• A) the reaction requires CO₂.
• B) the reaction is exergonic.
• C) the reaction requires ATP and NADPH.
• D) the reaction requires O₂.
• E) chlorophyll is not synthesized in the dark.

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