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Chapter 5: Photosynthesis and Cellular Respiration, Holt Biology Texas

Name _____________________ Date __________

Instructions: Complete the puzzle. Use the clues to help you fill the boxes with the correct words.

4

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13

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ACROSS

4. the process by which cells produce energy from carbohydrates; atmospheric oxygen combines with glucose to form water and carbon dioxide

6. a green pigment that is present in most plant cells, that gives plants their characteristic green color, and that reacts with sunlight, carbon dioxide, and water to form carbohydrates

8. a series of biochemical reactions that convert pyruvic acid into carbon dioxide and water; it is major pathway of oxidation in animal, bacterial, and plant cells, and it releases energy

9. the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to produce carbohydrates and oxygen

10. describes a process that does not require oxygen

11. a membrane system found within chloroplasts that contains the components for photosynthesis

13. a series of molecules, found in the inner membranes of mitochondria and chloroplasts, through which electrons pass in a process that causes protons to build up on one side of the membrane

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DOWN

1. the synthesis of organic compounds from carbon dioxide, such as in photosynthesis

2. the anaerobic breakdown of glucose pyruvic acid, which makes a small amount of energy available to cells in the form of ATP

3. a substance that gives another substance or a mixture its color

4. a class of pigments that are present mostly in plants and that aid in photosynthesis

5. describes a process that requires oxygen

7. an organism that obtains organic food molecules by eating other organisms or their by products and that cannot synthesize organic compounds from inorganic materials

10. an organism that produces its own nutrients from inorganic substances or from the environment instead of consuming other organisms

12. the breakdown of carbohydrates by enzymes, bacteria, yeasts, or mold in the absence of oxygen

14. a biochemical pathway of photosynthesis in which carbon dioxide is converted into glucose using ATP