A Suspension of Algae Is Incubated in a Flask in the Presence

question 86

Multiple Choice

A suspension of algae is incubated in a flask in the presence of both light and CO₂.When it is transferred to the dark,the reduction of 3-phosphoglycerate (3PG) to glyceraldehyde 3-phosphate (G3P) is blocked,and the concentration of ribulose 1,5-bisphosphate (RuBP) declines.Why does the RuBP concentration decline?

• A) RuBP needs to be regenerated from G3P.
• B) The regeneration of RuBP requires ATP.
• C) Sugar is no longer generated from G3P.
• D) There is a corresponding increase in RuMP.
• E) Both a and b

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