Chapter 22, Problem 17RE

Interpretation Introduction

Interpretation:

The comparison between the energy requirement of photosystem I and II is to be determined.

Concept introduction:

Photosystem I uses the light of high wavelength to reduce ${\text{NADP}}^{\text{+}}$ to $\text{NADPH}$, while photosystem II uses the light of low wavelength for the oxidation of water to produce oxygen.

The energy (E) of the photon is given as:

$\text{E = }\frac{hc}{\lambda }$

Here, h is Plank’s constant, c is the velocity of light, and $\lambda$ is the wavelength.