Biomolecules And Enzymes Question Preview (ID: 57527)
Biomolecules And Enzymes Review.
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Which list correctly shows carbohydrates in size from smallest to largest?
a) monosaccharide, disaccharide, polysaccharide
b) disaccharide, polysaccharide, monosaccharide
c) disaccharide, monosaccharide, polysaccharide
d) polysaccharide, disaccharide, monosaccharide
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) carbohydrate
b) lipid
c) protein
d) nucleic acid
Which substance is a nucleic acid?
a) amino acid
b) fat
c) polysaccharide
d) RNA
Which statement is correct about honey?
a) It contains disaccharides, a complex type of lipid.
b) It contains monosaccharides, the simplest carbohydrate
c) It contains starch, which gives it a sweet taste.
d) It contains lipids, which give it a sweet taste.
Which statement best describes the components of nucleic acids?
a) They are made up of chains of amino acids.
b) They are made up of carbon, hydrogen, and oxygen only.
c) They are made up almost entirely of carbon and hydrogen.
d) They are made up of nitrogenous bases, sugars, and phosphates.
Which statement correctly compares nucleic acids and carbohydrates?
a) They both contain carbon, but only nucleic acids contain hydrogen.
b) They both contain carbon, hydrogen, and oxygen in a 1:2:1 ratio.
c) They both contain carbon, but only carbohydrates contain oxygen.
d) They both contain carbon, but only nucleic acids contain phosphorous.
Which macromolecule forms a double layer as the primary structure of cell membranes?
a) fats
b) oils
c) phospholipids
d) steriods
If Tyler does not eat a diet that includes essential amino acids, his cells will not be able to build
a) nucleic acids
b) certain proteins
c) cell membranes
d) certain carbohydrates
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
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) Lipids in blubber insulate the animals from cold water.
b) Proteins in blubber help the animals move to stay warm.
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.
Which statement best describes how a catalyst can speed up a chemical reaction?
a) The catalyst decreases the activation energy needed.
b) The catalyst increases the concentration of products.
c) The catalyst binds to enzymes to release substrates.
d) The catalyst increases the concentration of reactants.
If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction?
a) The rate would increase.
b) The rate would decrease.
c) The rate would remain the same.
d) The rate would be zero.
Which term describes an enzyme?
a) substrate
b) reactant
c) catalyst
d) product
Lactase and carbonic anhydrase are examples of what type of substance?
a) substrate
b) reactant
c) product
d) enzyme
What is a substrate?
a) a molecule that acts as a catalyst
b) a place on the enzyme where the reaction occurs
c) a place on the product where the enzyme fits
d) a reactant that is catalyzed by an enzyme
Which two substances bind using a lock-and-key mechanism?
a) enzyme and substrate
b) reactant and substrate
c) substrate and product
d) reactant and product
A substance that influences the reaction but does not participate in the reaction is a
a) catalyst
b) reactant
c) product
d) substrate
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