PHOTOSYNTHESIS

1.                  Photosynthesis

            The biochemical process through which light energy is absorbed by  chlorophyll
             to produce organic molecules from carbon dioxide and water.

2.            Light reaction

            The reaction which require the presence of light. Energy from sunlight is

            absorbed by chlorophyll and used to bring about the photolysis of water

           

3.         Dark reaction           

              The reaction cannot be sustained without ATP and hydrogen ion. During

            this reaction carbon dioxide is reduced to form carbohydrate.

           

4.         Photolysis of water   

            Light energy used to split water molecule to hydrogen ion and hydroxyl ion

           

5.         Limiting factor

            The factor that is  the furthest from its optimum level and is the one

            controlling the rate of the overall process

           

6.         Green houses

            The place to grow the plant under control light intensity, temperature and

            carbon dioxide

DIGESTION, ABSORPTION AND ASSIMILATION

1.                Digestion

          Process by which complex food substance are broken to

         simple and soluble food  molecules which can be

         absorbed and used by body cells

2.         Absorption

          The movement of simple and soluble food molecule across

         cell lining the small  intestine and then into the blood.

3.      Assimilation

          The process where the  nutrient that absorb in the ileum

          convert to the complex  compound and structural

          components.

BALANCED DIET

1. Balanced diet

The food that contain the major nutrients including carbohydrates, proteins, lipids, vitamins, minerals, water and roughage or dietary fibre

2. Daily energy requirement

Energy needed to perform physical activities and sustain vital function such as heartbeat, breathing and for maintaining body temperature.

3. Energy value

The amount of heat generated from the combustion of one gram of food

4. Energy-providing organic molecules

Lipid, carbohydrates and proteins.