Number of ATP produces in photosynthesis?

Answer 1

Technically, ATP is produced only in the light reaction, their are 18 ATP molecules formed in it. In the dark reaction, ADP is formed by the breaking of the second and third phosphate group in ATP. Though overall in photosynthesis ATP isn't produced, it is formed in the light reaction, then broken in the dark, then recycled into the light, no over all gain or loss.

Answer 2

That depends on how much of photosynthesis you're including.

Photosynthesis has a "light" and "dark" reaction. Light reactions take place during the day, when the leaves are able to absorb sunlight, and dark reactions take place at night, when the plant uses up that energy it gleaned during the day.

The light reaction also has a cyclic and non-cyclic scheme. In the non-cyclic way, the chloroplast can make ~2.57 ATP (along with 2NADPH and 2O2) for every eight photons of light. Using the cyclic way, 1 ATP is made for every electron passed.

However, when the sun goes down, the chloroplast then uses 12 ATP and 12 NADPH to synthesize glucose. (Keeping a perfect 1/1 ratio of light and dark reactions, that actually comes out to a negative ATP synthesis).

But, the simplest way to explain it, and I imagine the answer you're looking for, is 3 ATP per photosynthesis cycle.

Answer 3

None really. Photosynthesis will occur without the need to use ATP energy. Photosynthesis creates the ATP necessary for the Calvin cycle to function. The Calvin cycle produces glucose that is then used for cellular respiration.

Answer 4

Each photosynthesis uses 1 ATP in order for light independent reaction (Calvin cycle) to occur.

Answer 5

ATP isn't used in or during photosynthesis at all. ATP is a type of energy that you need to survive. ATP is part of the respiratory system. :D

Answer 6

In photosynthesis there is no exact number. In respiration 38 are produced per glucose