By Tabi

What is Photosynthesis?

Photosynthesis is the process of when plants make their food, it is important to us humans and other living things.

Photosynthesis is a chemical process plants produce glucose and oxygen from carbon dioxide only using energy and light. This glucose helps trees and plants to survive and grow.Most living creatures on earth depend on these green trees, therefore photosynthesis is very important.

The Sun And The Light

The small amount light that does make it here is enough for the plants of the world to survive and go through the process of photosynthesis Light is actually energy. When that energy gets to a green plant,lots of different reactions can take place to store energy in the form of sugar molecules.

The Chloroplast

In this cell is the chlorophyll that captures the light from the Sun.The chloroplasts are working all the time with different jobs. The molecules are moved and converted in the area called the stroma.

The Molecules

Chlorophyll is actually quite a varied compound. There are four types: a, b, c, and d. as far as plants are concerned, the chlorophyll is found in the chloroplasts. The other big molecules are water , carbon dioxide, oxygen and glucose Carbon dioxide and water combine with light to create oxygen and glucose. That glucose is used in various forms by every creature on the planet. Animal cells require oxygen to survive.

The Light And Dark Reactions

The whole process doesn't happen all at one time. The process of photosynthesis is divided into two main parts. The first part is called thelight dependent reaction. This reaction happens when the light energy is captured and pushed into a chemical called ATP. The second part of the process happens when the ATP is used to make glucose (the Calvin Cycle). That second part is called the light independent reaction.