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
Multiple Choice
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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