`3CO_(2)`+9ATP+6NADPH+ water ` to ` Glyceraldehyde 3-phosphate +9ADP+6NADP+8Pi.
Analyse the above reaction and answer the following question.
(a) How many molecules of ATP and NADPH are required to fix one molecule of `CO_(2)` ?
(b) Where in the chloroplast does this process occur ?

Explanation

### Step-by-Step Solution:

**(a)** To determine how many molecules of ATP and NADPH are required to fix one molecule of CO₂, we analyze the given reaction:

1. The overall reaction shows that 3 CO₂ molecules require 9 ATP and 6 NADPH to produce glyceraldehyde 3-phosphate (G3P).
2. Since the reaction involves 3 CO₂ molecules, we can find the requirement for 1 CO₂ molecule by dividing the amounts of ATP and NADPH by 3.
3. Therefore, for 1 CO₂ molecule:
- ATP required = 9 ATP / 3 = 3 ATP
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