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Why can the Calvin cycle work at night but the photosystems connot?
Wiki User
∙ 7y ago
Calvin cycle occurs in the stroma of the chloroplast and utilizes the NADPH and ATP produced in the process of light dependent reaction( or what we say the z- scheme reaction). If both are present then the Calvin cycle can occur even at night. because the Calvin cycle is light independent reaction.
whereas the photo system as asked in the question actually refers to light dependent reaction( or what we say the z- scheme reaction) requires light.
Wiki User
∙ 10y ago
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The Calvin cycle happens during?
Carbon dioxide fixation in the light independent Calvin cycle occurs at night. Rubisco enzyme catalyzes the fixation of carbon dioxide to ribulose-1-5- bisphosphate.
Do the of photosynthesis ocdark reactions cur only at night?
No, dark reactions occurs in day light & as well as in night. It cant be called as dark reaction, its a Calvin cycle.
Where do extra ATP molecules come from in the Calvin Cycle?
ATPand NADP are formed during light reaction.i.e.,during cyclic photophosphorylation.
How does starch produce in leaves?
Yes, the calvin cycle can take place in the absence of light. The products of the light reactions if available can drive the calvin cycle in the absence of light. Basically , a plant needs ATP and NADPH to carry on the calvin cycle where sugar is made. CAM plants are able to produce sugar at night.
Plants that fix CO2 into organic acids at night when the stomata are open and carry out the Calvin cycle during the day when the stomata are closed are called?
CAM plants
Why can the Calvin cycle work at night but photosystems cant?
Because photosystems need light to operate (photo=light). Photosystems use energy from sunlight, Calvin systems use energy stored in the plant.
What part of the photosynthesis an occur at night?
Calvin cycle
Which photosynthetic can occur at night?
apex: the Calvin cycle
Which process of photosynthesis can occur at night?
No, not unless the plant is exposed to light.
Which photosynthetic process can occur at night?
apex: the Calvin cycle
The Calvin cycle happens during?
Carbon dioxide fixation in the light independent Calvin cycle occurs at night. Rubisco enzyme catalyzes the fixation of carbon dioxide to ribulose-1-5- bisphosphate.
Why is possible for Calvin cycle to occur in the dark?
The Calvin cycle is called the dark cycle because it does not require light to proceed. Unlike light reactions, the Calvin cycle is a light-independent reaction, which means it can and will occur in the dark as well as the light.
Do the of photosynthesis ocdark reactions cur only at night?
No, dark reactions occurs in day light & as well as in night. It cant be called as dark reaction, its a Calvin cycle.
Where do extra ATP molecules come from in the Calvin Cycle?
ATPand NADP are formed during light reaction.i.e.,during cyclic photophosphorylation.
Why doesn't Calvin cycle occur at night?
Obviously, there is no sunlight energy for light dependent reactions to occur while calvin cycle AKA light independent phase does not require light as it uses energy in the form of ATP and the NADPH to form sugars
How does starch produce in leaves?
Yes, the calvin cycle can take place in the absence of light. The products of the light reactions if available can drive the calvin cycle in the absence of light. Basically , a plant needs ATP and NADPH to carry on the calvin cycle where sugar is made. CAM plants are able to produce sugar at night.
Plants that fix CO2 into organic acids at night when the stomata are open and carry out the Calvin cycle during the day when the stomata are closed are called?
CAM plants
