Multiple Choice
What might be the result of not allowing a slide to air dry sufficiently prior to heat fixation in an organic chemistry reaction experiment?
3. Acids and Bases
Organic Chemistry Reactions
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Which of the following is the purpose of Phase 3 of the Calvin Cycle in organic chemistry reactions?
A
Regeneration of ribulose-1,5-bisphosphate
B
Production of ATP and NADPH
C
Reduction of 3-phosphoglycerate to glyceraldehyde-3-phosphate
D
Fixation of carbon dioxide
Verified step by step guidance1
Understand the Calvin Cycle: The Calvin Cycle is a series of biochemical redox reactions that take place in the stroma of chloroplasts in photosynthetic organisms. It is also known as the light-independent reactions or dark reactions.
Identify the phases of the Calvin Cycle: The Calvin Cycle consists of three main phases: Carbon fixation, Reduction phase, and Regeneration of ribulose-1,5-bisphosphate (RuBP).
Phase 1 - Carbon Fixation: In this phase, carbon dioxide is fixed into an organic molecule. This is the initial step where CO2 is incorporated into ribulose-1,5-bisphosphate (RuBP) to form 3-phosphoglycerate.
Phase 2 - Reduction: During this phase, ATP and NADPH produced in the light-dependent reactions are used to convert 3-phosphoglycerate into glyceraldehyde-3-phosphate (G3P).
Phase 3 - Regeneration: The purpose of this phase is to regenerate ribulose-1,5-bisphosphate (RuBP) from glyceraldehyde-3-phosphate (G3P) so that the cycle can continue. This is crucial for the cycle to perpetuate and for continuous carbon fixation.
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