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WorksheetsHigher Chemistry - Unit 2 - Proteins
Total questions: 12
Worksheet time: 6mins
Name
Class
Date
1.
Proteins are composed of what smaller subunits?
a)
amino acids
b)
nucleic acids
c)
fatty acids
d)
nucleotides
2.
Which colored box highlights the amino group?
a)
Blue (left)
b)
Turquoise (top)
c)
Orange
d)
Red
e)
Purple
3.
Which colored box highlights the carboxyl?
a)
Blue (left)
b)
Turquoise (top)
c)
Orange
d)
Red
e)
Purple
4.
What is a long chain of amino acids called?
a)
Polysaccharide
b)
Lipid
c)
Carbohydrate
d)
Polypeptide
e)
Nucleic acid
5.
Enzymes belong to which category of organic molecule?
a)
Proteins
b)
Lipids
c)
Carbohydrates
d)
Nucleic acids
6.
Which statement about enzymes is FALSE?
a)
They are made from amino acids
b)
They can be used multiple times
c)
They lower the energy needed for reactions
d)
A single enzyme has many different functions
7.
The bond that joins amino acids are called:
a)
Peptide Bonds
b)
Ester Bonds
c)
Glycosidic Linkages
d)
Phosphodiester Bonds
8.
If a methyl group (-CH3), which does not like water, were at the 'R', the amino acid would likely be:
a)
Hydrophobic
b)
Hydrophilic
c)
Ionic
d)
Acidic
9.
The reaction used to digest and break the bond in red is:
a)
Hydrolysis
b)
Dehydration Synthesis
c)
Oxidation
d)
Single Displacement
10.
The structure of proteins can be changed by environmental factors such as temperature or pH.
a)
True
b)
False
11.
Based on the graph, what temperature does this enzyme work best?
a)
15 C
b)
40 C
c)
30 C
12.
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
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