Download Properties of Water Review Worksheet

AP BIOCHEMISTRY REVIEW
11/21/2014
NAME_______________________
Properties of Water Review (CH 2)
1. Draw and label a water molecule here:
The hydrogen and oxygen atoms are held together by ___________________ bonds.
2. The electrons are not shared equally creating a ___________________ molecule.
3. Hydrogen bonds form between adjacent water molecules because the _________________ charged
hydrogen end of one water molecule attracts the ______________________ charged oxygen end of
another water molecule.
4. Water molecules stick to other water molecules. This property is called __________________.
5. Water molecules stick to other materials due to its polar nature. This property is called
__________________________.
6. ____________________________ is the tendency for fluids to resist flow.
_______________________ water is more viscous than warmer water, allowing floating organisms to
use less energy to keep from sinking.
7. __________________ _______________________ creates the skin-like surface and droplets or
beading formed due to the polar nature of water.
8. Why does ice float?
9. Explain why lipids and other molecules like sand do not dissolve in water.
10. Explain what pH is and what does it have to do with water?
11. How does salt dissolve in water? Explain the process and why it can dissolve in water.
12. How are some of water’s properties changed when salt is added to it? Answer the question by
explaining what happens to its ability to conduct current, its boiling point, freezing point, and
evaporation?
13._____________________ allows water to resist changes in state, retain heat energy much more
than other substances, and moderate temperatures of a nearby area.
AP BIOCHEMISTRY REVIEW
11/21/2014
NAME_______________________
14. Water is called the _____________________because its properties allow it to dissolve almost
anything.
15. _____________________ describes waters ability to use cohesion and adhesion to pull water up
against gravity.
16. _____________________ is the process of water moving from the roots of a plant to its leaves for
evaporation.
17. Why is water important to living things? Explain how water’s unique properties make it unlike any
other substance on earth.
ENZYME and MACROMOLECULE REVIEW (USE CH 4 & 5)
1. What is a chemical reaction?
2. What is a product?
3. What is a reactant?
4. What is the function of an enzyme?
2. What macromolecule are enzymes made out of?
3. Where can you find enzymes?
4. How do temperature and pH affect enzymes?
5. Acids have pH BELOW ___
Bases have pH ABOVE___
6. Neutral solutions have pH of ___
7. Are enzymes permanently changed in the chemical reactions they are involved in?
8. Will an enzyme work on any substance? Explain.
9. The effect of temperature on the relative rate of action of an enzyme is represented in the graph
below.
AP BIOCHEMISTRY REVIEW
11/21/2014
NAME_______________________
The optimum temperature for the action of this enzyme is approximately __?__ degrees Celsius.
a. 15
b. 22
c. 37
d. 50
10. Label the diagram using the following terms: Enzyme, Reactant, Product, Active Site, Enzyme
Substrate Complex.
1. Which type of molecule is formed from amino acids?
2. What is the element ratio and the types of elements found in each macromolecule:
a. Carbohydrates
b. Lipids
c. Proteins
d. Nucleic Acids
3. What macromolecule is made up of a sugar, a phosphate group, and a nitrogen base?
4. What grammatical ending (Suffix) do all Enzymes end with? What grammatical ending do all
sugars end with?
5. What are the monomer units of each macromolecule:
a. Carbohydrates
b. Lipids
c. Proteins
d. Nucleic Acids
6. Explain what this graph shows:
7. What are catalysts and what do they do to chemical reactions?
8. Explain what activation energy is.
9. List the functions and polymer examples of each macromolecule:
a. Carbohydrates
b. Lipids
c. Proteins
d. Nucleic Acids