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Cell Energy. Energy from the sun Plants use the sun’s energy to make sugar. The sugar is called “glucose”. Glucose is stored in the plant and used by.

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Presentation on theme: "Cell Energy. Energy from the sun Plants use the sun’s energy to make sugar. The sugar is called “glucose”. Glucose is stored in the plant and used by."— Presentation transcript:

1 Cell Energy

2 Energy from the sun Plants use the sun’s energy to make sugar. The sugar is called “glucose”. Glucose is stored in the plant and used by the plant for food.

3 Energy from the sun… Photosynthesis – the process by which plants use the sun’s energy to make sugar. Occurs in the chloroplasts. Chloroplasts contain a pigment called chlorophyll – molecules that absorb light energy

4 Energy from the sun… Photosynthesis: occurs in plants uses carbon dioxide, water, and energy produces oxygen and sugar CO 2 + H 2 O + energy C 6 H 12 O 6 + O 2 carbon dioxide watersugaroxygen

5 Energy from food Cellular respiration – process by which cells use oxygen to produce energy from food Food (glucose) is broken down to carbon dioxide, water and energy (ATP) This takes place in the mitochondria

6 Energy from food Respiration occurs in animals uses sugar and oxygen produces water, carbon dioxide and energy C 6 H 12 O 6 + O 2 CO 2 + H 2 O + ATP carbon dioxide water sugaroxygen energy

7 Energy from food Fermentation – process by which cells break down food into energy without using oxygen Animal cells use fermentation when oxygen is not available Fermentation produces lactic acid Bacteria and yeast use fermentation


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