AP Biology [Practice AP Exam] Questions and
Answers (Graded A)
[D] interactions between amino acids present in the polypeptide.
[2] The tertiary structure and function of a polypeptide is principally determined by the:
-----------------------------------------------
[A] length of the polypeptide.
[B] number of nucleotides present in the polypeptide.
[C] repeated units of glycerol making up the polypeptide.
[D] interactions between amino acids present in the polypeptide.
[E] number of introns within the polypeptide.
[B] Two
[3] In a species that has five different alleles for a gene at a particular locus, how many different
alleles may be present in the somatic cells of one diploid individual?
-----------------------------------------------
[A] One
[B] Two
[C] Three
[D] Four
[E] Five
[C] swell and lyse
[4] If red blood cells cultured in an isotonic medium are placed in distilled water, they will most likely:
-----------------------------------------------
[A] remain unchanged
[B] shrivel
[C] swell and lyse
[D] divide
[E] become dormant
[A] A triglyceride
[7] Metabolism of which the following molecules results in the greatest net usable energy per gram?
-----------------------------------------------
[A] A triglyceride
[B] A tripetide
[C] An alpha-linked disaccharide
[D] A beta-linked disaccharide
, [E] An anabolic steriod
[B] rough endoplasmic reticulum
[8] Cells that make up salivary glands would be expected to contain a relatively large amount of:
-----------------------------------------------
[A] smooth endoplasmic reticulum
[B] rough endoplasmic reticulum
[C] genetic material
[D] lipids
[E] peroxisomes
[C] Prokaryotes are structurally less complex than eukaryotes are.
[9] Which of the following characteristics distinguishes prokaryotic organisms from eukaryotic
organisms?
-----------------------------------------------
[A] Prokaryotes are unicellular, while all eukaryotes are multicellular.
[B] Prokaryotes are aquatic, while eukaryotes are terrestrial.
[C] Prokaryotes are structurally less complex than eukaryotes are.
[D] Prokaryotes require a host to replicate, while eukaryotes do not.
[E] Prokaryotes lack a cell membrane, while eukaryotes do not.
[C] The inhibitor binds to the enzyme but not at its active site.
[16] Which of the following best describes allosteric inhibition of an enzyme?
-----------------------------------------------
[A] The inhibitor binds to the mRNA to prevent translation of the enzyme.
[B] The inhibitor binds to the enzyme substrate.
[C] The inhibitor binds to the enzyme but not at its active site.
[D] The inhibitor binds to the enzyme at its active site.
[E] the inhibitor binds to the gene that encodes for the enzyme.
[A] Lysosome . . lipid hydrolysis
[17] Which of the following organelles is correctly matched with its function?
-----------------------------------------------
[A] Lysosome . . hydrolysis
[B] Nucleolus . . protein synthesis
[C] Ribosome . . carbohydrate synthesis
[D] Mitochondrion . . Calvin cycle
Answers (Graded A)
[D] interactions between amino acids present in the polypeptide.
[2] The tertiary structure and function of a polypeptide is principally determined by the:
-----------------------------------------------
[A] length of the polypeptide.
[B] number of nucleotides present in the polypeptide.
[C] repeated units of glycerol making up the polypeptide.
[D] interactions between amino acids present in the polypeptide.
[E] number of introns within the polypeptide.
[B] Two
[3] In a species that has five different alleles for a gene at a particular locus, how many different
alleles may be present in the somatic cells of one diploid individual?
-----------------------------------------------
[A] One
[B] Two
[C] Three
[D] Four
[E] Five
[C] swell and lyse
[4] If red blood cells cultured in an isotonic medium are placed in distilled water, they will most likely:
-----------------------------------------------
[A] remain unchanged
[B] shrivel
[C] swell and lyse
[D] divide
[E] become dormant
[A] A triglyceride
[7] Metabolism of which the following molecules results in the greatest net usable energy per gram?
-----------------------------------------------
[A] A triglyceride
[B] A tripetide
[C] An alpha-linked disaccharide
[D] A beta-linked disaccharide
, [E] An anabolic steriod
[B] rough endoplasmic reticulum
[8] Cells that make up salivary glands would be expected to contain a relatively large amount of:
-----------------------------------------------
[A] smooth endoplasmic reticulum
[B] rough endoplasmic reticulum
[C] genetic material
[D] lipids
[E] peroxisomes
[C] Prokaryotes are structurally less complex than eukaryotes are.
[9] Which of the following characteristics distinguishes prokaryotic organisms from eukaryotic
organisms?
-----------------------------------------------
[A] Prokaryotes are unicellular, while all eukaryotes are multicellular.
[B] Prokaryotes are aquatic, while eukaryotes are terrestrial.
[C] Prokaryotes are structurally less complex than eukaryotes are.
[D] Prokaryotes require a host to replicate, while eukaryotes do not.
[E] Prokaryotes lack a cell membrane, while eukaryotes do not.
[C] The inhibitor binds to the enzyme but not at its active site.
[16] Which of the following best describes allosteric inhibition of an enzyme?
-----------------------------------------------
[A] The inhibitor binds to the mRNA to prevent translation of the enzyme.
[B] The inhibitor binds to the enzyme substrate.
[C] The inhibitor binds to the enzyme but not at its active site.
[D] The inhibitor binds to the enzyme at its active site.
[E] the inhibitor binds to the gene that encodes for the enzyme.
[A] Lysosome . . lipid hydrolysis
[17] Which of the following organelles is correctly matched with its function?
-----------------------------------------------
[A] Lysosome . . hydrolysis
[B] Nucleolus . . protein synthesis
[C] Ribosome . . carbohydrate synthesis
[D] Mitochondrion . . Calvin cycle
