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प्रश्न
Answer the following question.
Explain the significance of Calvin cycle.
उत्तर
- Carboxylation:
RuBisCO is the most abundant enzyme in the world. It is responsible for fixing carbon in the form of CO2 into sugar. As a result of Carboxylation, the first stable product of carbon fixation i.e. 3- PGA is synthesized. - Reduction/Glycolytic reversal:
NADPH2 donates electrons to 1, 3-Bisphoshoglycerate to form 3- phosphoglyceraldehyde molecules. During this process, ADP and NADP are generated which are used in light reaction. - Regeneration of RuBP:
Some 3-phosphoglyceraldehyde molecules are involved in the production of glucose while others are recycled to regenerate the 5-carbon compound RuBP which used to accept new carbon molecules. Thus, the regeneration of RuBP is required for the Calvin cycle to run continuously.
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संबंधित प्रश्न
Choose the correct answer:
Energy is transformed from the light reaction to the dark reaction by _______________
The dark reaction of photosynthesis is known as ______.
Are the following statement true or false? Give a reason in support of your answer.
If a plant is kept in bright light all the 24 hours for a few days, the dark reaction (biosynthetic phase) will fail to occur.
Given below are five terms. Rewrite the terms in the correct order so as to be in logical sequence with regard to photosynthesis:
(i) water molecules, (ii) oxygen, (iii) grana, (iv) hydrogen and hydroxyl ions, (v) photons.
Why is it necessary to place a plant in the dark before starting an experiment on photosynthesis? Explain.
Describe the main chemical changes which occur during photosynthesis in a dark reaction.
Answer the following question.
Calvin cycle consists of three phases, what are they?
The molecules of water split during ______.
Name the two main phases of photosynthesis.
Distinguish between the following pairs on the basis of the word indicated in the bracket ( ).
Light reaction and Dark reaction (end products)
