Chapter 22, Problem 19RE

Interpretation Introduction

Interpretation:

The reason for the statement, “The photosynthetic reaction centre can be compared to a battery,” is to be explained.

Concept introduction:

Battery is defined as a series of electric cells (containing the positive and the negative terminals) combined, such that the positive terminal is always connected to the negative terminal.

Photosynthesis occurs in the presence of light, and water is converted to oxygen by oxidation and ${\text{NADP}}^{\text{+}}$ is reduced to $\text{NADPH}$.

${\text{NADP}}^{\text{+}}{\text{ + H}}_{\text{2}}\text{O }\to {\text{ NADPH + H}}^{\text{+}}\text{ + }\frac{1}{2}{\text{O}}_{\text{2}}$

In a photosynthetic reaction, there is a proton gradient generation that contributes to the total potential energy production.