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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
lipids
B
nucleotides
C
enzymes
D
amino acids
2) Why are there so many different proteins?
A
Proteins make up amino acids.
B
All proteins are made up of the same amino acids
C
Amino acids with different R groups make up different proteins.
D
Many different proteins link to form different amino acids.
3) What is the relationship between fatty acids and lipids?
A
Carbohydrates contain lipids, and nucleic acids have fatty acids
B
Lipids are made up of fatty acids
C
Fatty acids are made up of lipids
D
There is no relationship between them.
4) When your body's pH becomes too acidic, what does your body release to maintain homeostasis?
A
bases
B
carbohydrates
C
buffers
D
acids
5) What is the difference between monosaccharides and polysaccharides?
A
polysaccharides are more than one monosaccharide put together
B
there is no difference between them
C
monosaccharides are more than one polysaccharide but together
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
Carbohydrase only binds to proteins at the active site.
B
Carbohydrase lowers the activation energy needed to break down sugars, but not proteins.
C
There is no reason. The reaction should have worked.
D
Proteins cannot be broken down by other proteins.
8) Who is responsible for catalyzing metabolic reactions in our bodies?
A
enzymes
B
nucleic acids
C
lipids
D
carbohydrates
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 would work as normal.
B
The enzyme will not be able to work with a blocked active site.
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 denaturing
B
by binding to any substrate
C
by slowing down chemical reactions
D
By binding on to a specific substrate and lowering activation energy
11) Animals store excess sugar as
A
cellulite
B
oil
C
cellulose
D
glycogen
12) Plants store excess sugar as
A
cellulite
B
glycogen
C
cellulose
D
lipids
*select an answer for all questions
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