Question 1

When EcoRI recognizes the sequence G-A-A-T-T-C it cuts a strand between the G and A on the double strand.What is the sequence of the sticky end on one of the strands of the DNA strand shown?
5' 3'
-G-A-A-T-T-C-
-C-T-T-A-A-G-
3' 5'

Accepted Answer

A)  -C-T-T-A-A
B)  A-A-T-T-C-
C)  G-A-A-T-C
D)  Both A and B are correct.
E)  All of these are correct.F) C) and E)
G) A) and D)

Question 2

All of the following terms are associated with recombinant DNA except

Accepted Answer

A)  plasmids.
B)  restriction enzymes.
C)  bacterial cells.
D)  ribonuclease.
E)  sticky ends.F) A) and E)
G) B) and E)

Question 3

The use of DNA testing to determine which antibiotic will have the fewest side effects in a particular individual would be classified as

Accepted Answer

A)  genetic engineering.
B)  bioinformatics.
C)  gene therapy.
D)  bioethics.
E)  pharmacogenetics.F) C) and D)
G) A) and D) E

Question 4

All of the following terms are associated with recombinant DNA except

Accepted Answer

A)  plasmids.
B)  bacterial cells.
C)  endonuclease.
D)  hydrogen bonding.
E)  restriction enzymes.F) D) and E)
G) A) and B)

Question 5

A genetic map is a(an)

Accepted Answer

A)  complex of DNA and histones formed in a cell nucleus before cell division.
B)  segment of DNA that directs synthesis of a specific peptide or protein.
C)  list of locations of markers that relate to inheritable traits.
D)  set of identical copies of DNA segments from a single ancestor.
E)  ordered list of the nucleotides in a segment of DNA.F) None of the above
G) C) and D) C

Question 6

When a specific sequence on a DNA strand is cut by a restriction endonulease this results in what is termed a(n)

Accepted Answer

A)  blunt end.
B)  sticky end.
C)  termination.
D)  ligated end.
E)  None of these.F) B) and D)
G) A) and B) B

Question 7

Genomics is the study of

Accepted Answer

A)  errors in the replication of DNA.
B)  diseases whose transmission and occurrence are linked to heredity.
C)  the characteristics and functions of complete sets of genes.
D)  transference of genetic material from one species to another.
E)  the science of using biological materials for economic advantage.F) A) and B)
G) None of the above

Question 8

One type of hereditary mutation that results in a defect in the enzyme hexosaminidase A and causes mental retardation is called

Accepted Answer

A)  albinism.
B)  Tay-Sachs disease.
C)  phenylketonuria.
D)  muscular dystrophy.
E)  prions disease.F) A) and C)
G) A) and B)

Question 9

Telomerase is a(an)

Accepted Answer

A)  constriction that determine the shape of chromosomes during cell division.
B)  sequence of nucleotides that code for proteins which function as enzymes.
C)  sequence of nucleotides that code for proteins which function as chemical messengers,usually hormones or neurotransmitters.
D)  enzyme which adds specific groups of nucleic acids to the ends of the DNA molecule.
E)  sequence of non-coding nucleotides at the ends of chromosomes.F) A) and C)
G) A) and E)

Question 10

A technique that sorts amino acids or DNA fragments on the basis of their size is

Accepted Answer

A)  polymerase chain reaction.
B)  recombinant DNA.
C)  genetic selection.
D)  electrophoresis.
E)  mutation.F) B) and C)
G) C) and D)

Question 11

The molecular basis of a mutation is most closely linked to a

Accepted Answer

A)  defect in the transcription of a genetic message to mRNA.
B)  change in the sequence of bases on a DNA molecule.
C)  defect in the rRNA of ribosomes.
D)  misplaced stop codon.
E)  All statements are incorrect.F) B) and E)
G) B) and D)

Question 12

A gene is a(an)

Accepted Answer

A)  complex of DNA and histones formed in a cell nucleus before cell division.
B)  segment of DNA that directs synthesis of a specific peptide or protein.
C)  list of locations of markers that relate to inheritable traits.
D)  set of identical copies of DNA segments from a single ancestor.
E)  ordered list of the nucleotides in a segment of DNA.F) All of the above
G) A) and B)

Question 13

Circular strands of DNA located in the cytoplasm of bacterial cells are called

Accepted Answer

A)  plastids.
B)  plasmids.
C)  palindromes.
D)  chromosomes.
E)  primer.F) A) and E)
G) A) and B)

Question 14

The order of views of a genome map,from largest scale to smallest scale is

Accepted Answer

A)  chromosome,physical map,genetic map,overlapping clones,nucleotide sequence.
B)  nucleotide sequence,physical map,overlapping clones,genetic map,chromosome.
C)  physical map,genetic map,chromosome,overlapping clones,nucleotide sequence.
D)  chromosome,genetic map,physical map,overlapping clones,nucleotide sequence.
E)  nucleotide sequence,chromosome,overlapping clones,physical map,genetic map.F) A) and B)
G) A) and E)

Question 15

One type of hereditary mutation that results in a defect in the enzyme tyrosinase that causes a loss of skin pigment is called

Accepted Answer

A)  albinism.
B)  Tay-Sachs disease.
C)  phenylketonuria.
D)  muscular dystrophy.
E)  prions disease.F) A) and E)
G) B) and E)

Question 16

A gene mutation that involves a change of one base in the DNA is called a ________ mutation

Accepted Answer

A)  missense
B)  frameshift
C)  point
D)  nonsenseE) B) and C)
F) All of the above

Question 17

The removal of a gene from one organism and incorporating it into the DNA of another is called

Accepted Answer

A)  polymerase chain reaction.
B)  recombinant DNA.
C)  genetic selection.
D)  electrophoresis.
E)  mutation.F) A) and B)
G) A) and C)

Question 18

Which of the following is a coding portion of DNA?

Accepted Answer

A)  exon
B)  centromere
C)  intron
D)  telomere
E)  none of the aboveF) A) and D)
G) C) and D)

Question 19

The portion of a DNA molecule that does not code for proteins is called a(an)

Accepted Answer

A)  intron.
B)  exon.
C)  sticky end.
D)  codon.
E)  primer.F) A) and D)
G) D) and E)

Question 20

Telomeres are

Accepted Answer

A)  constrictions that determine the shape of chromosomes during cell division.
B)  sequences of nucleotides that code for proteins which function as enzymes.
C)  sequences of nucleotides that code for proteins which function as chemical messengers,usually hormones or neurotransmitters.
D)  enzymes which add specific groups of nucleic acids to the ends of the DNA molecule.
E)  sequences of non-coding nucleotides at the ends of chromosomes.F) A) and B)
G) A) and C)

Exam 27: Genomics

When EcoRI recognizes the sequence G-A-A-T-T-C it cuts a strand between the G and A on the double strand.What is the sequence of the sticky end on one of the strands of the DNA strand shown? 5' 3' -G-A-A-T-T-C- -C-T-T-A-A-G- 3' 5'

Correct AnswerverifiedShow Answer

All of the following terms are associated with recombinant DNA except

Correct AnswerverifiedShow Answer

The use of DNA testing to determine which antibiotic will have the fewest side effects in a particular individual would be classified as

Correct AnswerverifiedE

All of the following terms are associated with recombinant DNA except

Correct AnswerverifiedShow Answer

A genetic map is a(an)

Correct AnswerverifiedC

When a specific sequence on a DNA strand is cut by a restriction endonulease this results in what is termed a(n)

Correct AnswerverifiedB

Genomics is the study of

Correct AnswerverifiedShow Answer

One type of hereditary mutation that results in a defect in the enzyme hexosaminidase A and causes mental retardation is called

Correct AnswerverifiedShow Answer

Telomerase is a(an)

Correct AnswerverifiedShow Answer

A technique that sorts amino acids or DNA fragments on the basis of their size is

Correct AnswerverifiedShow Answer

The molecular basis of a mutation is most closely linked to a

Correct AnswerverifiedShow Answer

A gene is a(an)

Correct AnswerverifiedShow Answer

Circular strands of DNA located in the cytoplasm of bacterial cells are called

Correct AnswerverifiedShow Answer

The order of views of a genome map,from largest scale to smallest scale is

Correct AnswerverifiedShow Answer

One type of hereditary mutation that results in a defect in the enzyme tyrosinase that causes a loss of skin pigment is called

Correct AnswerverifiedShow Answer

A gene mutation that involves a change of one base in the DNA is called a ________ mutation

Correct AnswerverifiedShow Answer

The removal of a gene from one organism and incorporating it into the DNA of another is called

Correct AnswerverifiedShow Answer

Which of the following is a coding portion of DNA?

Correct AnswerverifiedShow Answer

The portion of a DNA molecule that does not code for proteins is called a(an)

Correct AnswerverifiedShow Answer

Telomeres are

Correct AnswerverifiedShow Answer

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E

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C

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B

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