Cyclic Photophosphorylation

1. Cyclic photophosphorylation occurs in?

Cyclic photophosphorylation normally occurs in the thylakoid membrane of chloroplasts.

2. What is the other name for cyclic photophosphorylation?

The other name for cyclic photophosphorylation is cyclic electron flow.

3. Why do plants carry out cyclic photophosphorylation?

Plants carry out cyclic photophosphorylation to generate ATP without producing NADPH.

4. How many ATP are formed in cyclic photophosphorylation?

Cyclic photophosphorylation results in the formation of two ATP molecules.

5. What is the final electron acceptor in cyclic photophosphorylation?

Photosystem I (P700) is the final electron acceptor in cyclic photophosphorylation.



Cyclic Photophosphorylation

Cyclic Photophosphorylation is a process to generate Adenosine triphosphate (ATP) without producing NADPH. This process generally takes place in the thylakoid membrane of chloroplasts. In the context of photosynthesis, Nicotinamide adenine dinucleotide phosphate (NADPH) is a reducing agent that works as the carrier of high-energy electrons.

These electrons can reduce the amount of carbon dioxide (CO2) in carbohydrates during light-independent reactions. In this article today, we will discuss What is cyclic photophosphorylation, the types of photophosphorylation, Steps of the cyclic photophosphorylation, and the difference between the Cyclic and Non-Cyclic Photophosphorylation process in detail.

Table of Content

  • What is Cyclic Photophosphorylation?
  • Light and Dark Reaction
  • Types of Photophosphorylation
  • Steps of Cyclic Photophosphorylation
  • Difference between Cyclic and Non-Cyclic Photophosphorylation

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What is Cyclic Photophosphorylation?

Cyclic photophosphorylation occurs in the thylakoid membrane of the chloroplasts during the light-dependent phase of photosynthesis. Since the term ‘cyclic’ is used, it means the electrons return to the reaction center of Photosystem I. The main aim of cyclic photophosphorylation is the production of ATP. Non-cyclic photophosphorylation is responsible for the production of NADPH....

Light and Dark Reaction

Photosynthesis occurs in two phases- light-dependent reaction and light-independent reaction. The light reaction occurs during daytime in the grana and its end products are ATP and NADPH. The dark reaction occurs during night in the stroma of the chloroplast. The end product is glucose that is utilized by the plant....

Types of Photophosphorylation

Photophosphorylation is the process of converting ADP to ATP in the presence of light energy. In simple words, photophosphorylation converts light energy into chemical energy by producing ATP in the grana of the chloroplast. There are two types of photophosphorylation, as mentioned below:...

Steps of Cyclic Photophosphorylation

Cyclic photophosphorylation is primarily responsible for generating ATP. It generally addresses the energy needs of the cell, specifically when there is a comparatively low demand for reducing power (NADPH). It is totally a light-dependent process that has some major components, as mentioned below:...

Difference between Cyclic and Non-Cyclic Photophosphorylation

Here are some major differences between Cyclic and Non-Cyclic Photophosphorylation as mentioned below:...

FAQs- Cyclic Photophosphorylation

1. Cyclic photophosphorylation occurs in?...