Number of ATP molecules formed from 8 molecules of water due to noncyclic electron transport and subsequent photophosphorylation is

Options

A. 8
B. 4
C. 16
D. 12

Answer

To solve the problem of how many ATP molecules are formed from 8 molecules of water during non-cyclic electron transport and subsequent photophosphorylation, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Process**: Non-cyclic electron transport occurs in the thylakoid membranes of chloroplasts during photosynthesis. Water molecules are split (photolysis) to provide electrons, and this process also generates oxygen.

2. **ATP Production per Water Molecule**: During non-cyclic electron transport, for every molecule of water that is split, 2 ATP molecules are produced. This is due to the flow of electrons through the electron transport chain and the subsequent phosphorylation of ADP to ATP.

3. **Calculate Total ATP from Given Water Molecules**: Since each water molecule produces 2 ATP, we can calculate the total ATP produced from 8 water molecules:
\[ \text{Total ATP} = \text{Number of water molecules} \times \text{ATP produced per water molecule} \]
\[ \text{Total ATP} = 8 \times 2 = 16 \]

4. **Conclusion**: Therefore, the total number of ATP molecules formed from 8 molecules of water due to non-cyclic electron transport and subsequent photophosphorylation is 16.

### Final Answer:
The number of ATP molecules produced from 8 molecules of water due to non-cyclic electron transport and subsequent photophosphorylation is **16**.