ACOS 5 Objective: SWBAT Discuss photosynthesis, respiration, and fermentation.

Living things are divided into two groups, producers and consumers, based on how they obtain their food.

Plants and many other producers can convert light energy into another kind of energy, chemical energy. The process they use is called photosynthesis.

Photosynthesis is when producers use light energy to make sugars, which can be used as food.

Producers that use photosynthesis are usually green because they contain a green pigment called chlorophyll. Chlorophyll and other pigments are used in photosynthesis to capture light energy.

The captured light energy is used to drive chemical reactions during which the raw materials, carbon dioxide and water, are used to produce sugar and oxygen.

Photosynthesis Equation 6CO2 + 6H2OC6H12O6 + 6O2 Light Energy Carbon dioxide + Water  Glucose + Oxygen

Consumers take in food by eating producers or other consumers.

Some of the energy from the food you eat is used to make you move. Some of it becomes thermal energy, which is why you feel warm or hot when you exercise. Most cells need oxygen to break down food.

Respiration is when, chemical reactions occur that break down food molecules into simpler substances and release their stored energy.

Respiration uses oxygen to break down glucose which produces energy along with carbon dioxide and water as wastes.

Respiration Equation C6H12O6 + 6O2 6CO2 + 6H2O+ energy +  + + Carbon dioxide Glucose Oxygen + Water + energy

When you exhale you breathe out carbon dioxide and some of the water. Respiration occurs in the cells of all living things.

When cells do not have enough oxygen for respiration, they use a process called fermentation.

Fermentation is used to release some of the energy stored in glucose molecules when cells do not have enough oxygen for respiration.

Fermentation reactions release some energy and produce much wastes.

During photosynthesis and respiration, what is produced in one is used in the other.

Photosynthesis produces sugars and oxygen, and respiration uses these products.

Respiration produces carbon dioxide and water, and photosynthesis uses these products.