Krebs cycle and Calvin cycle

what are they
and please make it as simple as possible, this has been quite hard to understand.

Calvin cycle is the main chemical cycle by which sugars are made from CO2

The Krebs cycle is the main chemical cycle by which sugar is converted into energy rich NADH+ molecules and FADH2 molecules for later use in the creation of ATP.

http://www.khanacademy.org/v/photosynthesis---calvin-cycle?p=Biology

http://www.khanacademy.org/v/krebs---citric-acid-cycle?p=Biology

hope this helps

KREB CYCLE
- in the repiration (animals like us)
- found in the mitochondria
- after this, move onto electron transport chain

CALVIN CYCLE
- in the photosynthesis (plants)
- found in the chloroplast
- produce sugar


hope this helps! simple like this!

http://www.khanacademy.org/v/krebs---cit…