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Biomolecules
Test Description: 1 st block review Macromolecules and enzymes
Instructions: Answer all questions to get your test result.
1) The building blocks of proteins are
A
amino acids
B
lipids
C
enzymes
D
nucleotides
2) Why are there so many different proteins?
A
Proteins make up amino acids.
B
Many different proteins link to form different amino acids.
C
Amino acids with different R groups make up different proteins.
D
All proteins are made up of the same amino acids
3) What is the relationship between fatty acids and lipids?
A
There is no relationship between them.
B
Fatty acids are made up of lipids
C
Lipids are made up of fatty acids
D
Carbohydrates contain lipids, and nucleic acids have fatty acids
4) When your body's pH becomes too acidic, what does your body release to maintain homeostasis?
A
bases
B
acids
C
carbohydrates
D
buffers
5) What is the difference between monosaccharides and polysaccharides?
A
monosaccharides are more than one polysaccharide but together
B
polysaccharides are more than one monosaccharide put together
C
there is no difference between them
D
polysaccharides are amino acids and monosaccharides are sugars
6) Lipase is a biocatalyst that breaks down fats. Lipase is which type of biomolecule?
A
protein
B
carbohydrate
C
lipid
D
nucleic acid
7) The enzyme carbohydrase can break down sugar, but it cannot break down proteins. Why is that?
A
Proteins cannot be broken down by other proteins.
B
Carbohydrase lowers the activation energy needed to break down sugars, but not proteins.
C
Carbohydrase only binds to proteins at the active site.
D
There is no reason. The reaction should have worked.
8) Who is responsible for catalyzing metabolic reactions in our bodies?
A
carbohydrates
B
lipids
C
enzymes
D
nucleic acids
9) A mouse was poisoned. The poison attached itself to the active site of an important enzyme. What would happen to the mouse's enzyme?
A
The enzyme will not be able to work with a blocked active site.
B
The enzyme would work as normal.
C
The enzyme would work at a slow pace.
D
The enzyme would repair itself overtime and return to its normal fucntion.
10) How do enzymes work?
A
By binding on to a specific substrate and lowering activation energy
B
by slowing down chemical reactions
C
by denaturing
D
by binding to any substrate
11) Animals store excess sugar as
A
cellulite
B
glycogen
C
oil
D
cellulose
12) Plants store excess sugar as
A
cellulose
B
cellulite
C
glycogen
D
lipids
*select an answer for all questions
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