Basic Biology: Answers to Sections in Chapter 4
“Check Your Understanding” Page 57
1. Energy
2. The movement of a substance from an area that is crowded to an area that is less crowded.
3. In the mitochondria
4. Because the energy in ATP can be used by a cell to carry out life processes
“Check Your Understanding” Page 59
1. light, carbon dioxide, and water
2. To make their own food
3. Oxygen and sugar
4. Both processes are related to each other. Cellular respiration uses oxygen and sugar to release
energy. Water and carbon dioxide are given off as byproducts. Photosynthesis uses light energy,
carbon dioxide, and water to make oxygen and sugar.
Chapter 4 Review – Vocabulary Review, Page 62
1. Passive transport
2. Photosynthesis
3. Diffusion
4. Osmosis
5. Semi permeable
6. Cellular respiration
7. Active transport
Chapter 4 Review – Chapter Quiz, Page 63
1. Food, sugar, or ATP
2. Chemical energy
3. Food and oxygen
4. Breathing is the way that you take in air into your lungs and let it out. Cellular respiration is the way
that your cells change food into usable energy.
5. Chlorophyll
6. ATP energy, carbon dioxide, and water; sugar and oxygen
7. Osmosis
8 The mitochondria
Critical Thinking (Page 63)
9. Because my heart beats while I am sleeping; because my lungs take in oxygen when I am sleeping;
because blood moves through my body when I am sleeping.
10. Animals eat food. Plants make their own food.