Table of Contents
- 1 Why does non-cyclic phosphorylation shift to cyclic phosphorylation?
- 2 How is noncyclic electron flow the same and different from cyclic flow?
- 3 What is the difference between cyclic and noncyclic electron flow and why would a plant need both?
- 4 What happens in non cyclic phosphorylation?
- 5 How do the movements of electrons compare in cyclic and noncyclic photophosphorylation?
- 6 Why are both cyclic and non cyclic electron flow needed for the Calvin cycle?
- 7 What is produced in Noncyclic photophosphorylation and not in cyclic phosphorylation?
- 8 What does non-cyclic photophosphorylation produce?
- 9 What is photophosphorylation in biology?
Why does non-cyclic phosphorylation shift to cyclic phosphorylation?
The concentration of NADPH in the chloroplast may help regulate which pathway electrons take through the light reactions. When the chloroplast runs low on ATP for the Calvin cycle, NADPH will accumulate and the plant may shift from noncyclic to cyclic electron flow.
How is noncyclic electron flow the same and different from cyclic flow?
How is ATP generated? What is the difference b/w the noncyclic and cyclic electron flow? Only photosystem I is used in cyclic photophosphorylation where the electrons are passed back to the same photosystem, while non-cyclic phosphorylation uses both photosystems. This supplements the amount of ATP, but makes no NADPH.
What is cyclic and non-cyclic photophosphorylation?
Photophosphorylation happens on the stroma lamella or frets. In cyclic photophosphorylation, the high energy electron is free from P700 to ps1 flow down to a cyclic pathway. On the other hand, non-cyclic photophosphorylation, NADP+ does not take the electrons; they instead sent back to cytochrome b6f complex.
What is the difference between cyclic and noncyclic electron flow and why would a plant need both?
Noncyclic electron transport produces ATP AND NADPH. Cyclic electron transport only produced ATP. A plant needs both processes to make enough ATP necessary for the Calvin Cycle.
What happens in non cyclic phosphorylation?
During non-cyclic photophosphorylation, the electrons released by P700 are carried by primary acceptor and are finally passed on to NADP. Here, the electrons combine with the protons – H+ which is produced by splitting up of the water molecule and reduces NADP to NADPH2.
What are the similarities between cyclic and non cyclic electron transport?
Similarities between cyclic and noncyclic phosphorylation Ø Both cyclic and noncyclic photophosphorylations are light reactions. Ø Both are dependent on light. Ø Both are electron transport systems. Ø Both pathways produce assimilatory powers.
How do the movements of electrons compare in cyclic and noncyclic photophosphorylation?
How do the movements of electrons compare in cyclic and noncyclic photophosphorylation? Electrons move from reaction center chlorophyll back to reaction center chlorophyll in cyclic photophosphorylation and from water to NADPH in noncyclic photophosphorylation.
Why are both cyclic and non cyclic electron flow needed for the Calvin cycle?
Both cyclic and non cyclic linear electron transport occur in higher plants chloroplast to maintain the required metabolic rate resulted in production of ATP and NADPH. The cyclic produces only ATP and no reducing powers.
How are the cyclic and non cyclic parts of the light reactions similar?
What is produced in Noncyclic photophosphorylation and not in cyclic phosphorylation?
Electrons from Photosystem I are accepted by NADP. ATP molecules are produced. Both NADPH and ATP molecules are produced. Water is not required….Difference between Cyclic and Non-Cyclic Photophosphorylation.
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What does non-cyclic photophosphorylation produce?
Non-cyclic photophosphorylation produces NADPH in addition to ATP (this requires the presence of water) Both NADPH and ATP are required to produce organic molecules via the light independent reactions.
What is cyclic and non-Cyclic phosphorylation?
The two types of photophosphorylation are cyclic and noncyclic phosphorylation. Cyclic photophosphorylation occurs during anoxygenic photosynthesis while noncyclic photophosphorylation occurs in oxygenic photosynthesis. The main difference between cyclic and noncyclic photophosphorylation is that in cyclic photophosphorylation, the electrons move in a circular pattern whereas, in noncyclic photophosphorylation, the electrons move in a linear pattern .
What is photophosphorylation in biology?
Photophosphorylation is the process of producing ATP molecules from the ADP during the biological process of photosynthesis in the presence of light energy; therefore it is also called as the light-dependent reactions.