ACP Bio Quiz

THE CHEMISTRY OF LIFE REVIEW & REINFORCEMENT     Name: ________KEY______

Properties of Water and pH:

1. Water is a _____Polar_____ molecule because the oxygen atom carries a slight ___negative___ charge, while the hydrogen atoms carry a slight ___positive__ charge.

2. What do you call the attraction between the hydrogen of one water molecule and the oxygen of another? creates a bond- cohesion__

3. Where do you find Acids on the pH scale? below 7__

4. Where do you find Bases on the pH scale? above 7_

5. List four unique properties of water.

Water has a high surface tension

Water has a high specific heat

Water bonds with other water molecules- cohesion

Water becomes less dense when frozen

What do you call water molecules sticking to other WATER molecules? __cohesion

Carbon Compounds

6. In order to be considered organic, a molecule must contain this element. ___carbon___

7. How many electrons does carbon have in its outermost energy level? ___4____

8. The formation of polymers from monomers occurs as a result of this type of reaction. Dehydration synthesis__

Draw a rough sketch of this reaction (see your notes to help you)

9. The breakdown of polymers into smaller monomers occurs as a result of this type of reaction. _____hydrolysis___

Draw a rough sketch of this reaction (see your notes to help you)

11.Fill out the table below to summarize the four organic molecules

10. How do plants store glucose? (a molecule) _____starch_________

11. How do you (and other animals) store glucose? (a molecule) ______glycogen_________

12. What piece of an amino acid makes it unique from other amino acids? _____R-group_____

13. What is the function of DNA? Store genetic information

Chemical Reactions & Enzymes

14.  In a chemical reaction, these are the substances that get changed (the “ingredients”) _Reactants

15. In a chemical reaction, these are the new substances formed. ___Products____

16. Without these, the chemical reactions in your cells would occur too slowly to support life’s processes. Enzymes

17. What is the name of the place on an enzyme where the substrate binds? Active site_

18. List two factors that can impact the activity of an enzyme.

Temperature and pH

19. Label the following diagram using the following word bank:

Enzyme Active   Site Products       Enzyme- Substrate Complex

Reactant (substrate)