Question

What are the steps in photosynthesis ?

Answer 1

The below are steps involved in photosynthesis :

1. CO${}_2$ and H${}_2$O enter the leaf.

2. Light hits the pigment in the membrane of a thylakoid, splitting the H${}_2$O into O${}_2$, $H^{+}$ and $e^{-}$

3. The electrons move down through the ETS, losing energy at every level

4. Sunlight hits the second pigment molecule allowing the enzymes to convert ADP to ATP and NADP+ gets converted to NADPH.

5. The ATP and NADPH are used by the Calvin cycle as a power source for converting carbon dioxide from the atmosphere into simple sugar glucose.

6. The Calvin cycle converts 3CO${}_2$ molecules from the atmosphere to glucose.

7. The second of two major stages in photosynthesis (following the light reactions) involve atmospheric CO${}_2$ fixation by reducing it to carbohydrate (Glucose).