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Biomolecules And Enzymes
Test Description: Biomolecules and Enzymes Review
Instructions: Answer all questions to get your test result.
1) Which list correctly shows carbohydrates in size from smallest to largest?
A
disaccharide, monosaccharide, polysaccharide
B
disaccharide, polysaccharide, monosaccharide
C
polysaccharide, disaccharide, monosaccharide
D
monosaccharide, disaccharide, polysaccharide
2) Sebastian looks at the chemical structure of a specific biomolecule. He notices that this molecule contains long chains of Carbon and Hydrogen. What type of biomolecule does he see?
A
lipid
B
protein
C
carbohydrate
D
nucleic acid
3) Which substance is a nucleic acid?
A
polysaccharide
B
amino acid
C
fat
D
RNA
4) Which statement is correct about honey?
A
It contains lipids, which give it a sweet taste.
B
It contains disaccharides, a complex type of lipid.
C
It contains starch, which gives it a sweet taste.
D
It contains monosaccharides, the simplest carbohydrate
5) Which statement best describes the components of nucleic acids?
A
They are made up almost entirely of carbon and hydrogen.
B
They are made up of nitrogenous bases, sugars, and phosphates.
C
They are made up of carbon, hydrogen, and oxygen only.
D
They are made up of chains of amino acids.
6) Which statement correctly compares nucleic acids and carbohydrates?
A
They both contain carbon, but only nucleic acids contain phosphorous.
B
They both contain carbon, but only nucleic acids contain hydrogen.
C
They both contain carbon, hydrogen, and oxygen in a 1:2:1 ratio.
D
They both contain carbon, but only carbohydrates contain oxygen.
7) Which macromolecule forms a double layer as the primary structure of cell membranes?
A
phospholipids
B
oils
C
fats
D
steriods
8) If Tyler does not eat a diet that includes essential amino acids, his cells will not be able to build
A
nucleic acids
B
cell membranes
C
certain carbohydrates
D
certain proteins
9) Which macromolecule provides a person with most of the energy that is needed for daily activities?
A
carbohydrates
B
lipids
C
proteins
D
nucleic acids
10) Mammals that live in the Arctic Ocean have a large amount of blubber, which is a fatty tissue just beneath the skin.Which statement best relates why these animals have so much blubber?
A
Proteins in blubber help the animals move to stay warm.
B
Lipids in blubber insulate the animals from cold water.
C
Carbohydrates in blubber provide all the energy that the animals need to stay warm.
D
Nucleic acids help build the lipids in blubber, which keep animals warm by regulating cell activities.
11) Which statement best describes how a catalyst can speed up a chemical reaction?
A
The catalyst increases the concentration of reactants.
B
The catalyst binds to enzymes to release substrates.
C
The catalyst increases the concentration of products.
D
The catalyst decreases the activation energy needed.
12) If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction?
A
The rate would be zero.
B
The rate would increase.
C
The rate would decrease.
D
The rate would remain the same.
13) Which term describes an enzyme?
A
substrate
B
catalyst
C
product
D
reactant
14) Lactase and carbonic anhydrase are examples of what type of substance?
A
product
B
substrate
C
enzyme
D
reactant
15) What is a substrate?
A
a place on the enzyme where the reaction occurs
B
a reactant that is catalyzed by an enzyme
C
a molecule that acts as a catalyst
D
a place on the product where the enzyme fits
16) Which two substances bind using a lock-and-key mechanism?
A
reactant and product
B
reactant and substrate
C
enzyme and substrate
D
substrate and product
17) A substance that influences the reaction but does not participate in the reaction is a
A
catalyst
B
product
C
substrate
D
reactant
*select an answer for all questions
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