Cell Energy

Science, Grade 6

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Table Of Contents: Cell Energy

1. The Sun Is the Main Source of Energy
Every cell in an organism needs energy to survive. The sun is the source of energy for most living organisms, either directly or indirectly.
2. How Do Organisms Obtain Energy?
Plants use the sun's energy to make their food. Other organisms eat plants to obtain energy. We obtain energy through the food we eat.
3. Autotrophs and Heterotrophs
Plants and some bacteria are called autotrophs because they make their own food. Other organisms are called heterotrophs because they do not make their own food.