Question 1

If you were seeking to change your life to avoid mutations in your DNA,which would be least useful to avoid?

Accepted Answer

A)  errors in DNA replication
B)  errors during meiosis
C)  exposure to radiation
D)  exposure to tobacco
E)  exposure to magnesiumF) None of the above
G) A) and D)

Question 2

Our most potent weapon in the fight against viruses is

Accepted Answer

A)  antibiotics.
B)  sulfa drugs.
C)  gene therapy.
D)  surgery.
E)  vaccinations.F) A) and D)
G) B) and D)

Question 3

What type of mutation occurred in the following?
Normal allele GGAAUGAAACAGGAACCC
Mutant allele GGAAUGAAACAGGUACCC

Accepted Answer

A)  substitution
B)  insertion
C)  deletion
D)  frameshift
E)  No answer is correct.F) C) and E)
G) All of the above

Question 4

Using the genetic code,predict what type of mutation has occurred in the hemoglobin sickle cell anemia allele.
Normal allele GGAAUGAAACAGGAACCC
Mutant allele GGAAUGAAACAGGUACCC

Accepted Answer

A)  a point mutation,Val to Glu
B)  a frame shift
C)  addition of a new stop codon
D)  a point mutation,Glu to ValE) A) and B)
F) A) and C)

Question 5

Mutations cause incorrect sequencing of nucleic acids.Incorrect sequencing of DNA will result in new alleles,and it may lead to evolution.Incorrect sequencing of mRNA will result in a faulty protein,but it will not lead to evolution.

Accepted Answer

A) True 
 B)False

Question 6

What type of RNA carries the information that specifies a protein?

Accepted Answer

A)  transfer RNA
B)  ribosomal RNA
C)  messenger RNA
D)  double-stranded RNA
E)  complementary RNAF) A) and E)
G) A) and C)

Question 7

The stage of viral replication in which the new viruses leave the host cell is

Accepted Answer

A)  release.
B)  attachment.
C)  penetration.
D)  synthesis.
E)  assembly.F) C) and D)
G) A) and D)

Question 8

Which of the following best describes the relationship between DNA,proteins,and RNA?

Accepted Answer

A)  DNA is transcribed into RNA,then RNA is translated into proteins.
B)  DNA is transcribed into proteins,then proteins are translated into RNA.
C)  DNA is translated into RNA,then RNA is transcribed into proteins.
D)  DNA is translated into proteins,then proteins are transcribed into RNA.E) A) and D)
F) B) and D)

Question 9

In studies of the genetic basis of language,FOXP2 sequences differed the most between mice and

Accepted Answer

A)  rhesus monkeys.
B)  gorillas.
C)  chimpanzees.
D)  humans.
E)  All answers are correct.F) B) and D)
G) C) and E)

Question 10

The correct sequence of stages of viral replication is

Accepted Answer

A)  attachment-synthesis-penetration-assembly-release
B)  penetration-attachment-assembly-synthesis-release
C)  penetration-attachment-synthesis-release-assembly
D)  attachment-penetration-assembly-synthesis-release
E)  attachment-penetration-synthesis-assembly-releaseF) A) and B)
G) A) and E)

Question 11

What role do hydrogen bonds play in the DNA molecule?

Accepted Answer

A)  Hydrogen bonds link complementary nitrogenous bases,thus keeping the two strands of DNA parallel to each other.
B)  Hydrogen bonds link the two strands of DNA end to end during transcription and translation.
C)  Hydrogen bonds link the two strands of DNA end to end during transcription only.
D)  Hydrogen bonds link the complementary deoxyribose sugars,thus maintaining a separation between the two DNA strands.
E)  No answer is correct.F) All of the above
G) A) and B)

Question 12

Oral infections with herpes simplex virus 1 can lie dormant in nerve cells for years,and when a patient becomes stressed,the virus is released,forming cold sores on the lips.While lying dormant,the virus is in which of the following states?

Accepted Answer

A)  lytic
B)  symptomatic
C)  latent
D)  replicative
E)  infectiveF) B) and D)
G) A) and D)

Question 13

If you were looking at an electron micrograph of an mRNA molecule being translated by many ribosomes at once,you would be looking at a picture from a prokaryote.

Accepted Answer

A) True 
 B)False

Question 14

Mutations create new alleles that

Accepted Answer

A)  are beneficial to the organism's fitness.
B)  have no effect on the fitness of the organism.
C)  decrease the fitness of the organism.
D)  All answers are correct.
E)  increase diversity at a genetic locus.F) B) and C)
G) None of the above

Question 15

Plant cells may help the whole plant fight a virus by dying on purpose.

Accepted Answer

A) True 
 B)False

Question 16

The rungs of the DNA ladder are formed by base pairs

Accepted Answer

A)  joined by covalent bonds.
B)  joined by hydrogen bonds.
C)  joined by ionic bonds.
D)  NOT joined to each other.E) A) and C)
F) All of the above

Question 17

Why would it take more energy to separate DNA with the sequence GCGCGCGC and its complementary strand than the sequence ATATATAT and its complementary strand?

Accepted Answer

A)  A's and T's do not form pairs between separate DNA strands.
B)  The helix is wound more tightly in G and C base pairs.
C)  G and C base pairs form more hydrogen bonds between DNA strands.
D)  The sequence containing G's and C's is longer.
E)  G and C base pairs form more covalent bonds between DNA strands.F) A) and E)
G) A) and B)

Exam 7: Dna Structure and Gene Function

Mutations create new alleles that

Correct Answer
verified

Plant cells may help the whole plant fight a virus by dying on purpose.

Correct Answer
verified

Which of the following best describes the relationship between DNA,proteins,and RNA?

Correct Answer
verified

The correct sequence of stages of viral replication is

Correct Answer
verified

Oral infections with herpes simplex virus 1 can lie dormant in nerve cells for years,and when a patient becomes stressed,the virus is released,forming cold sores on the lips.While lying dormant,the virus is in which of the following states?

Correct Answer
verified

Using the genetic code,predict what type of mutation has occurred in the hemoglobin sickle cell anemia allele. Normal allele GGAAUGAAACAGGAACCC Mutant allele GGAAUGAAACAGGUACCC

Correct Answer
verified

Our most potent weapon in the fight against viruses is

Correct Answer
verified

What role do hydrogen bonds play in the DNA molecule?

Correct Answer
verified

The rungs of the DNA ladder are formed by base pairs

Correct Answer
verified

Mutations cause incorrect sequencing of nucleic acids.Incorrect sequencing of DNA will result in new alleles,and it may lead to evolution.Incorrect sequencing of mRNA will result in a faulty protein,but it will not lead to evolution.

Correct Answer
verified

Why would it take more energy to separate DNA with the sequence GCGCGCGC and its complementary strand than the sequence ATATATAT and its complementary strand?

Correct Answer
verified

If you were seeking to change your life to avoid mutations in your DNA,which would be least useful to avoid?

Correct Answer
verified

What type of mutation occurred in the following? Normal allele GGAAUGAAACAGGAACCC Mutant allele GGAAUGAAACAGGUACCC

Correct Answer
verified

In studies of the genetic basis of language,FOXP2 sequences differed the most between mice and

Correct Answer
verified

What type of RNA carries the information that specifies a protein?

Correct Answer
verified

If you were looking at an electron micrograph of an mRNA molecule being translated by many ribosomes at once,you would be looking at a picture from a prokaryote.

Correct Answer
verified

The stage of viral replication in which the new viruses leave the host cell is

Correct Answer
verified

Exam 7: Dna Structure and Gene Function

Mutations create new alleles that

Correct AnswerverifiedShow Answer

Plant cells may help the whole plant fight a virus by dying on purpose.

Correct AnswerverifiedShow Answer

Which of the following best describes the relationship between DNA,proteins,and RNA?

Correct AnswerverifiedShow Answer

The correct sequence of stages of viral replication is

Correct AnswerverifiedShow Answer

Oral infections with herpes simplex virus 1 can lie dormant in nerve cells for years,and when a patient becomes stressed,the virus is released,forming cold sores on the lips.While lying dormant,the virus is in which of the following states?

Correct AnswerverifiedShow Answer

Using the genetic code,predict what type of mutation has occurred in the hemoglobin sickle cell anemia allele. Normal allele GGAAUGAAACAGGAACCC Mutant allele GGAAUGAAACAGGUACCC

Correct AnswerverifiedShow Answer

Our most potent weapon in the fight against viruses is

Correct AnswerverifiedShow Answer

What role do hydrogen bonds play in the DNA molecule?

Correct AnswerverifiedShow Answer

The rungs of the DNA ladder are formed by base pairs

Correct AnswerverifiedShow Answer

Mutations cause incorrect sequencing of nucleic acids.Incorrect sequencing of DNA will result in new alleles,and it may lead to evolution.Incorrect sequencing of mRNA will result in a faulty protein,but it will not lead to evolution.

Correct AnswerverifiedShow Answer

Why would it take more energy to separate DNA with the sequence GCGCGCGC and its complementary strand than the sequence ATATATAT and its complementary strand?

Correct AnswerverifiedShow Answer

If you were seeking to change your life to avoid mutations in your DNA,which would be least useful to avoid?

Correct AnswerverifiedShow Answer

What type of mutation occurred in the following? Normal allele GGAAUGAAACAGGAACCC Mutant allele GGAAUGAAACAGGUACCC

Correct AnswerverifiedShow Answer

In studies of the genetic basis of language,FOXP2 sequences differed the most between mice and

Correct AnswerverifiedShow Answer

What type of RNA carries the information that specifies a protein?

Correct AnswerverifiedShow Answer

If you were looking at an electron micrograph of an mRNA molecule being translated by many ribosomes at once,you would be looking at a picture from a prokaryote.

Correct AnswerverifiedShow Answer

The stage of viral replication in which the new viruses leave the host cell is

Correct AnswerverifiedShow Answer

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