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WorksheetsBIO FOR JAMEE
Total questions: 28
Worksheet time: 19mins
Name
Class
Date
1.
What are the parts that make up the lock-and-key model of enzyme function?
a)
enzyme and product
b)
enzyme and catalyst
c)
enzyme and substrates
d)
enzyme and active site
2.
What happens to a catalyst during a chemical reaction?
a)
It is destroyed
b)
It combines with the product
c)
more catalyst molecules are made
d)
It is not changed
3.
How does a catalyst affect the activation energy of a chemical reaction?
a)
It raises the activation energy
b)
It lowers the activation energy
c)
It has no effect on the activation energy of the reaction
d)
First it lowers the activation energy to start the reaction, then it raised the activation energy to keep the reaction under control.
4.
What term describes the reactants that an enzyme acts on?
a)
substrate
b)
lock and key
c)
product
d)
active site
5.
Which conditions are likely to affect the shape of an enzyme?
a)
concentration of substrate
b)
temperature
c)
pH
d)
Both temperature and pH
6.
The function of an enzyme is to
a)
change the direction of the reaction
b)
make the activation time lesson
c)
dance
d)
change the equilibrium
7.
Enzymes act as
a)
Protein molecules
b)
Reaction stimulators
c)
Precursor molecules
d)
Catalysts for living organisms
8.
Monomer is
a)
Subunits that make up polymers
b)
to provide energy
c)
Large molecule
d)
to store energy
9.
Which carbon-based molecule contains the genetic information of the cell?
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
10.
Enzymes are made of which monomer?
a)
monosaccharides
b)
fatty acids and glycerol
c)
amino acids
d)
nucleotides
11.
This molecule provides energy for the cells.
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
12.
I am made of carbon, hydrogen, oxygen, and nitrogen.
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
13.
What element is considered the building block of life?
a)
carbon
b)
hydrogen
c)
oxygen
d)
water
14.
A carbohydrate is a ______________.
a)
fatty acid
b)
amino acid
c)
nucleotide
d)
sugar
15.
A triglyceride would be classified as a ______________________.
a)
protein
b)
carbohydrate
c)
lipid
d)
nucleic acid
16.
Peptide bonds are found in _______________.
a)
nucleic acids
b)
lipids
c)
proteins
d)
carbohydrates
17.
DNA and RNA are considered as ______________.
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
18.
Used for short term (quick) energy.
a)
carbohydrates
b)
lipids
c)
proteins
d)
nucleic acids
19.
Provides long term energy and insulation,
a)
lipids
b)
carbohydrates
c)
nucleic acids
d)
proteins
20.
Contains DNA and RNA
a)
lipids
b)
carbohydrates
c)
proteins
d)
nucleic acids
21.
Contains a phosphate, sugar and nitrogen base
a)
nucleic acid
b)
lipid
c)
carbohydrate
d)
protein
22.
Building blocks of the body, hair , muscles etc.
a)
protein
b)
nucleic acid
c)
lipids
d)
carbohydrates
23.
What is a peptide bond?
a)
Bond that holds two amino acids together.
b)
A bond that holds hydrogen and oxygen molecules together.
c)
A bond that holds the phosphate group of one nucleotide and a sugar of a neighboring nucleotide.
d)
A bond that is formed by the sharing of electrons.
24.
Enzymes are considered to be
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
25.
What is the purpose of an enzyme?
a)
give permission for the reaction
b)
raise activation energy
c)
speed up reactions
d)
control how many reactions occur
26.
Where do substrates bind on an enzyme?
a)
voltage-gated channels
b)
surface receptor
c)
calcium channels
d)
active site
27.
How do enzymes speed up chemical reaction?
a)
Increasing activation energy
b)
Decreasing activation energy
c)
Increasing deactivation energy
d)
Decreasing deactivation energy
28.
What is the name for the mechanism of enzyme activity?
a)
Lock and key
b)
jigsaw puzzle
c)
hammer and nail
d)
two hands pattern
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