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WorksheetsProteins and Enzymes
Total questions: 15
Worksheet time: 10mins
Name
Class
Date
1.
What is the monomer of a protein?
a)
Amino Acid
b)
Nucleic Acid
c)
Monosaccharide
d)
Nucleotide
2.
There are _____ different kinds of amino acids.
a)
20
b)
23
c)
46
d)
26
3.
An enzyme is a type of
a)
protein
b)
carb
c)
lipid
d)
amino acid
4.
If you change the shape of a protein, will it work the same/properly?
a)
Yes
b)
No
5.
The first step of building a protein creates a(n)
a)
amino acid chain (aka polypeptide chain)
b)
alpha helix or beta pleated sheet
c)
folded subunit
d)
2+ folded subunits combining together
6.
The structure of proteins can be changed by environmental factors such as temperature or pH.
a)
True
b)
False
7.
Refers to the three-dimensional structure of an entire amino acid chain in a protein molecule
a)
tertiary structure
b)
primary structure
c)
secondary structure
d)
fibrous proteins
8.
The order of the amino acids occur in the chain
a)
disulfide cross-link
b)
hydrophobic
c)
primary structure
d)
secondary structure
9.
Amino Acids:
a)
are a type of marinade.
b)
help transport fats in the body.
c)
are the building blocks from which proteins are made.
d)
are only found in plants.
10.
Enzymes are considered to be
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
11.
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
12.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
13.
Based on the graph, what temperature does this enzyme work best?
a)
15 C
b)
40 C
c)
30 C
14.
What happens when enzymes are heated to a high temperature?
a)
The enzymes die.
b)
The shapes of the enzyme are altered or denatured
c)
The enzymes' amino acid sequence changes.
d)
The enzymes remain the same
15.
Enzymes are composed of which of the following monomers?
a)
amino acids
b)
carbohydrates
c)
nucleotides
d)
monosaccharides
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