Chapter 8, Problem 25A

Summary Introduction

To explain:

Oxygen as a byproduct of photosynthesis.

Introduction :

Photosynthesis is the process by which synthesis of glucose takes place using carbon dioxide and water in presence of sunlight. It also requires the chlorophyll pigment which absorbs light energy in the form of photons.

Explanation of Solution

In the process of photosynthesis, the formation of the ATP requires protons. The protons here come from the hydrogen ions and they help in the conversion of the ADP to ATP molecules with the help of ATP synthase enzyme. Hence, hydrogen ion generation from water is an important process of photosynthesis.

As the process of hydrogen ion formation takes place by breaking the bond of water, oxygen is also released. This oxygen is not utilized in the whole process of photosynthesis. Hence, it comes out as a byproduct of photosynthesis.