Biology Form Two Notes Mtaala Mpya

Nutrition is the process by which organisms take in and use nutrients.

Nutrients are any substances that nourish an organism or are substances which organisms use for the body processes.

Food is any material when taken in absorbed and utilized meet requirement of plant and animal body.

Function of food

1. Oxidized to release energy

2. Used in growth of cells

3. Used to repair lost cells and tissue

Types of nutrition

There are two main types of nutrition:

• Autotrophic nutrition and

• Heterotrophic nutrition.

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