Across
- 3. An aquatic organism commonly used in required practicals to investigate the effect of light intensity on photosynthesis rate.
- 4. A large carbohydrate molecule synthesized in animals to store glucose for energy.
- 6. The amount of extra oxygen required after vigorous exercise to react with and remove accumulated lactic acid
- 8. The product of the incomplete breakdown of glucose during anaerobic respiration in animal muscle cells.
- 10. The state of an enzyme at high temperatures when its active site changes shape and can no longer bind to its substrate.
- 11. A type of chemical reaction like cellular respiration that continuously occurs in living cells to release energy.
- 12. The plant tissue that transports water and dissolved mineral ions up from the roots to the leaves.
- 13. A chemical solution used to test a leaf for the presence of starch to prove that photosynthesis has taken place.
- 15. Organisms like plants that can make their own food using light, water, and carbon dioxide.
- 16. The sum of all the chemical reactions continually occurring in a cell or the body of an organism.
- 17. A chemical reaction such as photosynthesis in which energy is transferred from the environment to the chloroplasts by light.
- 18. Lipid molecules formed from one glycerol and three fatty acids used for energy storage and insulation in animals.
- 19. Tiny pores on a leaf through which carbon dioxide diffuses into the plant and oxygen diffuses out.
Down
- 1. An insoluble molecule used by plants to store excess glucose in their stems, leaves, and roots without affecting osmosis.
- 2. The term given to anaerobic respiration in yeast cells, which produces ethanol and carbon dioxide.
- 5. A type of environmental factor that is in shortest supply and restricts the overall rate of photosynthesis.
- 7. The green pigment in chloroplasts that absorbs light energy required for photosynthesis to take place.
- 9. A complex carbohydrate made from glucose that strengthens plant cell walls.
- 14. A chemical compound formed in animals by the breakdown of excess proteins which is then excreted.
- 16. The cellular organelles where most of the reactions for aerobic respiration take place.
