AP BIOLOGY

PHOTOSYNTHESIS

THE CALVIN CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is both a reactant and product of the Calvin Cycle?
A
ATP
B
NADPH
C
CO2
D
G3P
Explanation: 

Detailed explanation-1: -Glyceraldehyde 3-phosphate or G3P is the product of the Calvin cycle.

Detailed explanation-2: -Answer and Explanation: In order to produce sugar (usually in the form of glucose or fructose), the Calvin cycle uses atmospheric carbon dioxide, ATP and NADPH (both produced in the light reactions) as reactants to create glyceraldehyde-3-phosphate (a 3-carbon sugar).

Detailed explanation-3: -The G3P is ultimately converted to glucose. Every 3 cycles of the Calvin Cycle (light independent reaction), 6 molecules of G3P are produced; only 1 is used to produce glucose. The remaining 5 molecules of G3P are used to regenerate RuBP to allow the Calvin Cycle to continue.

Detailed explanation-4: -G3P and water are products. In photosynthesis, chlorophyll, water, and carbon dioxide are reactants. G3P and oxygen are products. In photosynthesis, water, carbon dioxide, ATP, and NADPH are reactants.

There is 1 question to complete.