Lesson 26 How do living things get their energy?

1. Lesson 26 How do living things get their energy?

2. You need energy to live. So do plants. All living things need energy to carry out their life processes.

3. Does anyone know how your car gets its energy? It burns a fuel, just like plants and animals!

4. Energy is released when oxygen combines with a fuel. Plants and animals use glucose as a fuel. Glucose is a simple sugar.

5. Glucose and oxygen combine, and energy is made. Making energy by combining digested food (glucose) and oxygen is called….. Who can remember?? We have used the word since October! A candy to the first to remember!

6. Respiration is combining oxygen with glucose to make energy. Now, don’t forget it!

7. Where does glucose come from? Animals ingest food. Some food is changed to glucose during digestion. The body uses this glucose to make energy.

8. What about plants??? Plants make their own food through a process called photosynthesis. Photosynthesis takes place in the leaves of green plants.

9. The cells of plants have chloroplasts. Chloroplasts are filled with chlorophyll. Chlorophyll is a green substance needed for a plant to make food.

10. Chlorophyll traps light energy from the sun. Light energy is needed for a plant to make its own food.

11. Plants also need water and carbon dioxide to make food. Water enters a plant through the root. Most carbon dioxide enters a plant through the tiny holes in the leaves. Stomata are the tiny holes in leaves.

12. Think of respiration like this: Glucose + oxygen carbon dioxide & water & energy

13. Think of photosynthesis like this: With chlorophyll and sunlight Carbon dioxide glucose and oxygen and water

14. Now let’s look at them together. Glucose carbon dioxide+ water + and water energy Carbon dioxide + water glucose and water What do you notice?????

15. Isn’t it a great relationship we have with plants????