Review

4. When an enzyme is heated beyond its optimal temperature, it becomes ________
7. When we breathe in, the intercostal muscles ________
11. The process of maintaining a stable internal environment despite changes to the external environment
12. Visking tubing is used to demonstrate this process
13. Prevents the backflow of blood
17. The disease in which a person's blood cannot clot easily
20. A hormone involved in controlling blood glucose level
21. The uptake of particles by cells against a concentration gradient
23. This enzyme helps breakdown hydrogen peroxide into water and oxygen
24. This cell structure acts as a partially permeable membrane
25. The breakdown of food

1. Vitamin A found in carrots, promote good ________
2. The _________ system is made up of the brain, spinal cord and nerves
3. A temporary arm-like projection usually found in unicellular organisms such as the amoeba
4. When the heart muscles are relaxed
5. The type of respiration that requires oxygen
6. One large substrate attaches to this type of enzyme
8. A product of fermentation
9. When too much water goes into the cell and it swells too much and bursts
10. The carbohydrase enzyme found in saliva that breaks starch down into sugar
14. The body's reaction to being too cold
15. A large, permanent structure found in plant cells that contains cell sap
16. Egg cells store food in their cytoplasm, this is a feature of cell ____________
18. Amino acids are used to make ________
19. Proteins are made in this cell organelle
22. The yellow liquid found in blood