WorksheetsUnit 3 Concepts 1 & 2 Review
Total questions: 35
Worksheet time: 21mins
Name
Class
Date
1.
What is another word for "substrate?"
a)
Solvent
b)
Product
c)
Solute
d)
Reactant
2.
In the picture above, what is happening to the enzyme in the second step?
a)
Chemical bonds are being broken in the substrate.
b)
Product is being broken in two.
c)
Substrate is beginning to bond to the enzyme.
d)
None of the above.
3.
If the activation energy is lowered, the reaction will take...
a)
More energy
b)
Less energy
c)
The same amount of energy
d)
No energy
4.
The molecule that an enzyme binds to is known as the...
a)
Product
b)
Active site
c)
Activation energy
d)
Substrate
5.
The area on the enzyme where the reactant binds to is called the...
a)
Activation energy
b)
Active site
c)
Substrate
d)
Product
6.
On the graph above, an increase in temperature results in....
a)
A decrease in the activation energy.
b)
A decrease in the reaction rate.
c)
An increase in activation energy.
d)
An increase in the reaction rate.
7.
Which phase best describes an endothermic reaction?
a)
Absorbs more energy than it releases.
b)
Releases more energy than it absorbs.
c)
Nothing changes
d)
In a state of equilibrium
8.
What phrase best describes an exothermic reaction?
a)
Absorbs more energy than is released.
b)
Releases more energy than absorbed.
c)
Nothing changes
d)
State of equilibrium
9.
Identify the products in this reaction:
6H2O + 6CO2 → C6H12O6 + 6O2
6H2O + 6CO2 → C6H12O6 + 6O2
a)
C6H12O6 + 6O2
b)
6H2O + 6CO2
c)
6O2
d)
6H2O
10.
Identify the reactants in this reaction:
6H2O + 6CO2 → C6H12O6 + 6O2
6H2O + 6CO2 → C6H12O6 + 6O2
a)
6CO2
b)
6O2
c)
6H2O + 6CO2
d)
C6H12O6 + 6O2
11.
The activation energy can be decreased if a _______ is involved
a)
Product
b)
Substrate
c)
Reactant
d)
Catalyst
12.
Chemical reactions change ________ and form __________
a)
reactants; products
b)
matter; gas
c)
matter; matter
d)
enzymes; products
13.
Cellular respiration is an example of a ______ reaction.
a)
Nonreactive
b)
Endothermic
c)
Exothermic
d)
Substrate
14.
Photosynthesis is an example of a _______ reaction.
a)
Nonreactive
b)
Substrate
c)
Exothermic
d)
Endothermic
15.
In order for a reaction to occur, _________ form(s) or break(s).
a)
Products
b)
Energy
c)
Bonds
d)
Reactants
16.
Use the picture above. All the following parts make up the ADP molecule EXCEPT....
a)
A
b)
A and B
c)
C
d)
D
17.
What letters in the above picture make up the ATP molecule?
a)
A, B, C, and D
b)
A, B, and C
c)
A and B only
d)
C and D only
18.
Between which two letters will the bond break to release energy?
a)
B and C
b)
A and B
c)
B and C
d)
C and D
19.
What macromolecule found in the food you eat will the cells break down first to release ATP?
a)
Proteins
b)
Carbolhydrates
c)
Lipids
d)
Nucleic Acids
20.
What phrase best describes the function of an ATP molecule?
a)
Creates energy
b)
Absorbs energy
c)
Releases energy
d)
Stores energy
21.
Energy is released from an ATP molecule when...
a)
Converts a phosphate group to ADP
b)
Attaches an extra phosphate group
c)
Produces a sugar molecule
d)
It loses a phosphate group
22.
Which of the following provides energy for most of your cell functions?
a)
Releasing a phosphate group to change ATP to ADP
b)
Gaining a phosphate group to change ADP to ATP
c)
Releasing a phosphate group to change ADP to ATP
d)
Gaining a phosphate group to change ATP to ADP
23.
The activation _________ is required for a chemical reaction to start.
a)
Reactant
b)
Energy
c)
Product
d)
Bond
24.
There are two kinds of chemical reactions; _________ and ___________
a)
Reactant; product
b)
Exothermic; endothermic
c)
activation energy; substrate
d)
Molecular bonding; substrate
25.
An example of a reaction that releases energy is ____________. An example of a reaction that absorbs energy is ____________
a)
Cellular respiration; photosynthesis
b)
Photosynthesis; cellular respiration
26.
If the activation energy is lowered, the reaction will....
a)
Speed up
b)
Slow down
c)
Nothing will happen
d)
Both A and B
27.
What is the function of ATP in living things?
a)
Provides energy for cellular processes
b)
Stores genetic information
c)
Builds RNA molecules
d)
Absorbs solar (light) energy
28.
All cells use ____________________ as energy for cellular processes.
a)
Carbohydrates
b)
Sunlight
c)
ATP
d)
Oxygen
29.
What cellular process requires chemical energy produced by ATP?
a)
Replicating DNA
b)
Cellular division
c)
Building proteins
d)
All of the above
30.
True or False: Cells can use energy from food that has not been converted to ATP.
a)
True
b)
False
31.
Research Question: Does the type of gasoline put in a car effect how fast the car can drive. What is the independent variable?
a)
Type of gasoline
b)
which car the gas is put into
c)
how fast the car can drive
d)
how much gas is put into the car
32.
a)
The dependent variable is total cost
b)
The dependent variable is weight
c)
The independent variable is total cost
d)
The independent variable is cost of a package
33.
What cell organelle is represented by the red arrow in the picture?
a)
Cell Membrane
b)
Cytoplasm
c)
Nucleus
d)
Mitochondrion
e)
Cell Wall
34.
What is the function of a chloroplast?
a)
makes proteins for animal cells
b)
allows materials in and out of the cell
c)
provides structure and support
d)
absorbs sunlight for photosynthesis
35.
Identify the structure that is indicated by the arrow in the image.
a)
cell wall
b)
central vacuole
c)
chloroplast
d)
nucleus
100 %
