At what steps of L-D reactions is ATP made?

The light-dependent reactions take place in the membrane sections of the chloroplast and thylakoids which offer a large surface area to absorb light energy.

The main function of these reactions is to provide a source of ATP and reduced NADP which are used to reduce CO2 in the light independent reactions.

The ATP is formed in the last step, I believe, when the H+ ions are pumped from the thylakoid lumen to the chloroplast stroma via the ATP Synthase Enzyme. This transforms the APD molecules to ATP molecules.

Hope this helps.

That would be Light Dependent Reactions, the ones that occur as part of this pathway here

http://www.biologyhomeworkhelp.net/img/photosystem...

In the Z scheme, ATP is generated when electrons from Photosystem II pass through the Electron Transport Chain (through the cytochrome complexes) which that particular diagram mentions clearly.

Hope that helps, cheers.

Photosynthesis happens in two reactions---- a light reaction that requires light (photosynthesis) And a dark reaction, the (Calvin cycle) that does not require light.