B4 Bioenergetics : Photosynthesis

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Photosynthesis

Photosynthesis Definition:

Photosynthesis is a chemical reaction that happens in chloroplasts of plants and algae. It needs light from the sun to convert CO2 and water into glucose and oxygen.

CARBON DIOXIDE + WATER ----> GLUCOSE + OXYGEN  

Limiting Factors Of Photosynthesis:

- Low temperature: All chemical reactions happen more slowly as the reactant molecules have less kinetic energy

- Shortage of light

- Shortage of Chlorophyll

- Shortage of CO2

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Respiration

Respiration Definition:

- Respiration is an exothermic reaction ( releases energy) that supplies all the energy needed by      living organisms.

- This reaction happens continuously in all living cells.

- The reaction can be aerobic (with oxygen) or anaerobic (without oxygen). 

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