Ch. 2.2 Cells capture and release energy.

Lesson Vocabulary: chemical energy, glucose, photosynthesis, chlorophyll, cellular respiration

Review

1. Glucose; most cells store their energy in glucose.

2. It produces food for most organisms.

3. glucose and oxygen

4. Cellular respiration and photosynthesis both produce energy, but the starting materials and the products are reversed in the two processes. Photosynthesis uses carbon dioxide and water to convert energy to glucose. Cellular respiration uses glucose and oxygen and produces carbon dioxide and water.

5. They would die. They need oxygen for cellular respiration.

6. Cellular respiration is like breathing because when you exhale, carbon dioxide and water leave your body. When you inhale, oxygen enters your body.