I am having a hard time with this.

Question

In all of these subjects: glycolsis,krebs cycle, electron transport, light dependent reaction, and light in-dependent reaction

what is the pupose, where does it take place, what are the reactants,what are the products and what is the role of ATP?"

I have answers but i have no way of pasting them here to have someone check them.

Answer 1

Then what is your question? You are confusing me!

Answer 2

The metabolic processes (first three) are interconnected in eukaryotes, and the first (glycolysis) is used solely in prokaryotes.

Glycolysis (where: cytoplasm) -

Glucose + 2 ADP + 2 NAD+ --> 2 ATP, 2 NADH, 2 pyruvate (+ 2 H2O)

Pryuvate is converted to acetyl CoA where it enters the Kreb's cycle (where: mitochondrial inner matrix)

Acetyl CoA  + 2 H2O + 3 NAD+ + FAD -> 3 NADH + 3H+ + 2 CO2 + FADH2.

The H+ ions are transported across the inner mitochondrial membrane to create a proton gradient between the inner mitochondrial and outer mitochondrial matrices, which drives the production of ATP (~28 ATP) from ATP synthase.  This is electron transport (although protons are being transferred as H+!)

So then ATP (~30 are produced from one glucose molecule including both metabolic processes) is an energy currency for metabolic processes that releases the energy in its chemical bonds by splitting to form ADP.

I'm not sure about the others, someone else will probably get those.