The light reactions of photosyntheysis generate high energy electrons, which end up in _________. The light reactions also produce ___________ and ___________.

Options

A. oxygen, sugar, ATP
B. Chlorophyll, ATP, NADPH
C. NADPH, ATP, Oxygen
D. FADH, NADPH, oxygen

Answer

To answer the question regarding the light reactions of photosynthesis, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding Light Reactions**: The light reactions of photosynthesis occur in the thylakoid membranes of chloroplasts. They capture light energy and convert it into chemical energy.

2. **High Energy Electrons**: During the light reactions, chlorophyll pigments absorb light energy. This energy excites electrons, generating high energy electrons.

3. **Final Destination of Electrons**: These high energy electrons are ultimately transferred to an electron carrier molecule known as NADP+, which is reduced to form NADPH. Therefore, the first blank in the question is filled with "NADPH".

4. **Byproducts of Light Reactions**: In addition to NADPH, the light reactions also produce ATP (adenosine triphosphate) through a process called photophosphorylation. Furthermore, oxygen (O2) is released as a byproduct when water molecules are split to provide electrons. Thus, the second and third blanks can be filled with "ATP" and "O2", respectively.

5. **Final Answer**: Therefore, the complete answer to the question is: The light reactions of photosynthesis generate high energy electrons, which end up in **NADPH**. The light reactions also produce **ATP** and **O2**.