What is the end product of noncyclic photophosphorylation?

Answer 1

Cyclic photophosphorylation is the production of some ATP in the light dependent stage of photosynthesis. No photoylsis of water occurs and therefore no reduced NADP is produced either. Only photosystem one is involved here and as light is absorbed by the photosystem, two electrons are released which are accepted by the electron transfer chain. As the electrons are transferred along the chain, energy is released which pumps protons across the thylakoid membrane. A proton gradient forms and the protons diffuse through protein channels associated with ATP synthase enzymes, the proton motive force along with the enzyme combine ADP and inorganic phosphate atom to create ATP. The flow of protons which creates the ATP is chemiosmosis. The ATP can then be used in the light independent stage of photosynthesis or to actively transport potassium ions into the guard cells, so they become turgid as a result of water entering by osmosis. This causes the stomata to open and carbon dioxide can readily diffuse in - increasing the rate of photosynthesis.

Answer 2

The Passage of an H+ ion from the thylakoid provides the energy to synthesise ATP from ADP in the presence of ATPase.

The H+ ion then forms NADH from NAD.

So, the answer to your question is:

ATP and NADH.

- Dave8128

No, It produces ATP and NADPH.

-Haley

The end products are oxygen, water, ATP,NADPH.

Answer 3

In cyclic electron flow, the electron begins in a pigment complex called photosystem I, passes from the primary acceptor to plastoquinone, then to cytochrome b6f (a similar complex to that found in mitochondria), and then to plastocyanin before returning to chlorophyll.

This transport chain produces a proton-motive force, pumping H+ ions across the membrane; this produces a concentration gradient that can be used to power ATP synthase during chemiosmosis. This pathway is known as cyclic photophosphorylation, and it produces neither O2 nor NADPH.

Unlike non-cyclic photophosphorylation, NADP+ does not accept the electrons, but they are sent back to photosystem I. NADPH is NOT produced in cyclic photophosphorylation. In bacterial photosynthesis, a single photosystem is used, and therefore is involved in cyclic photophosphorylation. It is favoured in anaerobic conditions and conditions of high irradiance and CO2 compensation point.

Answer 4

Cyclic photophosphorylation is when the electron from the chlorophyll went through the electron transport chain and return back to the chlorophyll.

Noncyclic photophosphorylation is when the electron from the chlorophyll doesn't return back but incorporated into NADPH.

Answer 5

When converting ADP to ATP is the process called cyclic photosynthesis. The cyclic photosynthesis used Photosystem I and the chlorophyll P700.

Answer 6

Cyclic photophosphorylation involves photosystem I and only produces ATP. Noncyclic photophosphorylation, meanwhile, involves both photosystems I and II and produces ATP and NADPH.

Answer 7

In the thylakoid membrane.

Answer 8

ATP.