Download Enzymes Quiz

Name: ____________________________ Date: _________________________ Block: _________
Honors Biology
Macromolecules & Enzymes Quiz
LT1: I can connect properties of water (polar/nonpolar, cohesion/adhesion, pH) to ways they are utilized by organisms.
1. What does it mean by the following statement: “Water is polar”? What does that mean for nonpolar substances? (2 pt)
2. How are cohesion and adhesion similar? How are they different? How can organisms use adhesion? (3 pt)
3. If an azalea plant thrives in soil with a pH of 4.5, is it a strong/weak base or strong/weak acid? Be specific. What happens if
the soil has a pH of 5? (1 pt)
a. it is a stronger acid and the azalea plant would thrive more in the environment
b. it is a weaker base and the azalea would thrive more in the environment
c. it is a stronger base and the azalea would not receive the nutrients necessary for survival
d. it is a weaker acid and the azalea would not receive the nutrients necessary for survival
LT2: I can differentiate between the monomer and polymer units of macromolecules, and how that affects their function.
4. What is the relationship between a monomer and a polymer? Give TWO examples of each. (3 pt – 0.5 for each)
5. Suppose you had a friend who wanted to entirely avoid eating fats. What function(s) of lipids could you describe to convince
that person of the importance of fats to his or her health? (2 pt)
6. If I have a macromolecule with a 1:2:1 ratio, what type is it? In order, what elements make up the 1:2:1 ratio? (1 pt)
a. carbon, oxygen, hydrogen
c. carbon, hydrogen, oxygen
b. oxygen, hydrogen, carbon
d. oxygen, carbon, hydrogen
Name: ____________________________ Date: _________________________ Block: _________
Honors Biology
LT3: I can analyze models of the enzyme-substrate complex to determine an enzyme’s role in the cell
7. Which of the following best explains why enzymes are necessary for many cellular reactions? (1 pt)
a. enzymes supply the oxygen necessary for
reactions
c. the reactions take up too much space in the cell
if enzymes are missing
b. enzymes change reactants from solid to liquid
during reactions
d. the reactions are too slow to meet the needs of
the cell if enzymes are missing
8. Catalase is an enzyme that decomposes hydrogen peroxide into water and oxygen. Hydrogen peroxide naturally forms in the
body from cellular reactions, but catalase is used to help the body quickly rid itself of it. The liver contains high amounts of
catalase, as its function is to help filter the body of toxins. Based on the information, provide the following: (3 pt)
Enzyme:
Substrate:
Product(s):
9. Choose ALL that apply: Enzymes are often compared to a lock and key because… (1 pt)
a. the substrate and enzyme fit perfectly together
like a lock and key
c. the substrate unlocks the enzyme
d. the enzyme locks up the substrate
b. only certain substrates will work with certain
enzymes
LT4: I can predict how an enzyme’s function will be affected by changes in temperature and pH.
10. The effect of temperature on the relative rate of action of an enzyme is represented in the graph. The optimum
temperature for the action of this enzyme is approximately ________? What happens if it drops below the optimum
temperature? (2 pt)
11. The human body can reuse some of the enzymes found in raw fruits and vegetables. Why is this not the case for cooked
fruits and vegetables? (1 pt)
a. the structure would change and lose its ability to function if cooked – the enzymes denature
b. the structure would change and lose its ability to function if cooked – the enzyme changes shape and still works
c. the structure would not change and it will still function properly – its optimal temperature just changes
d. the structure would not change and it will still function properly – it will just require a different substrate