5. Introduction to photosynthesis

[@jacobp.j4602]

Thylakoids stacked one on top of the other forms a granum (pl. grana). These grana are connected to one another using intergranal thylakoids or lamellae.

[@nishi_03]

In the structure u hv given here, please explain me that, inside the thylakoid chloroplast is present or inside the chloroplast thylakoid is present? M confused.

[@priyafufal4171]

inside chloroplast, Thylakoids is present

[@ahmadzeb3607]

inside chloroplast thylakoids are present

[@mmaking8664]

My question is this, With the photolysis of water, you are essenially breaking the covalent bond between the oxygen and hydrogen ATOMS. At what point do these hydrogen ATOMS turn into hydrogen PROTONS. An answer would be much appreciated because this question has been plaguing me. The other question that i have is, how many electrons are exactly accepted by one NADP molecule? We know that one NADP will accept one hydrogen proton, but how many electrons are exactly accepted by one NADP molecule?

[@matthewmullin8168]

I know this is an old comment but I feel the need to answer it: 1) the way that the water splitting works (I think), is that PSII is so electronegative, that it takes 2 water molecules and rips 4 electrons off it. As a result, the water molecules have a 2+ positive charge and become very unstable. The hydrogen protons then fly off as the two free oxygen atoms form molecular oxygen 2) NADP+ has a positive charge. Adding a hydrogen proton would make it NADPH with a charge of 2+. Therefore, it accepts 2 electrons to become neutral again.