Biomolecules Question Preview (ID: 35318)
1 St Block Review Macromolecules And Enzymes.
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The building blocks of proteins are
a) amino acids
b) lipids
c) enzymes
d) nucleotides
Why are there so many different proteins?
a) All proteins are made up of the same amino acids
b) Many different proteins link to form different amino acids.
c) Amino acids with different R groups make up different proteins.
d) Proteins make up amino acids.
What is the relationship between fatty acids and lipids?
a) Lipids are made up of fatty acids
b) Fatty acids are made up of lipids
c) Carbohydrates contain lipids, and nucleic acids have fatty acids
d) There is no relationship between them.
When your body's pH becomes too acidic, what does your body release to maintain homeostasis?
a) acids
b) bases
c) buffers
d) carbohydrates
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) polysaccharides are amino acids and monosaccharides are sugars
d) there is no difference between them
Lipase is a biocatalyst that breaks down fats. Lipase is which type of biomolecule?
a) protein
b) lipid
c) nucleic acid
d) carbohydrate
The enzyme carbohydrase can break down sugar, but it cannot break down proteins. Why is that?
a) Carbohydrase lowers the activation energy needed to break down sugars, but not proteins.
b) Carbohydrase only binds to proteins at the active site.
c) Proteins cannot be broken down by other proteins.
d) There is no reason. The reaction should have worked.
Who is responsible for catalyzing metabolic reactions in our bodies?
a) lipids
b) enzymes
c) carbohydrates
d) nucleic acids
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.
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
Animals store excess sugar as
a) cellulose
b) cellulite
c) oil
d) glycogen
Plants store excess sugar as
a) cellulose
b) cellulite
c) lipids
d) glycogen
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