PHOTOSYNTHESIS
THE CALVIN CYCLE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
NADP+
|
|
|
NADPH
|
|
|
ATP
|
|
|
G3P (to form glucose)
|
Detailed explanation-1: -The dark reaction occurs outside of the thylakoids. In this reaction, the energy from ATP and NADPH are used to fix carbon dioxide (CO2). So NADH is not a product of the light reaction of photosynthesis.
Detailed explanation-2: -The ATP and NADPH from the light-dependent reactions are used to make sugars in the next stage of photosynthesis, the Calvin cycle. In another form of the light reactions, called cyclic photophosphorylation, electrons follow a different, circular path and only ATP (no NADPH) is produced.
Detailed explanation-3: -In photosynthesis, light energy is used to transfer electrons from chlorophyll to nicotinamide adenine dinucleotide phosphate (NADPH) in photosystem I and produces ATP (Figure 5). This metabolic energy is used to fixate CO2 in the light-independent reactions of photosynthesis (Calvin cycle).
Detailed explanation-4: -Light energy is used by photosynthetic organisms (photoautotrophs) to produce both ATP and reduced electron carrier (NADPH). ATP, NADPH, and O2 are the three products of photosynthesis’ light reaction.
Detailed explanation-5: -Complete answer: NADH is not a product of light reaction of photosynthesis.