Question 1

The influenza virus contains an RNA genome.Scientists typically need to make a new flu vaccine every year because

Accepted Answer

A)  our bodies develop resistance to the vaccine and it becomes less effective. 
B)  the virus develops resistance to the vaccine. 
C)  the virus can mutate into new strains. 
D)  people change their habits each year and become susceptible to different strains of the virus. 
E)  the common influenza virus can come from many species of animals including cats and dogs. 
A)  our bodies develop resistance to the vaccine and it becomes less effective. 
B)  the virus develops resistance to the vaccine. 
C)  the virus can mutate into new strains. 
D)  people change their habits each year and become susceptible to different strains of the virus. 
E)  the common influenza virus can come from many species of animals including cats and dogs.

Question 2

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. 
A)  joined by covalent bonds. 
B)  joined by hydrogen bonds. 
C)  joined by ionic bonds. 
D)  NOT joined to each other.

Question 3

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

Accepted Answer

A)  insertion 
B)  substitution 
C)  deletion 
D)  All answers are correct 
A)  insertion 
B)  substitution 
C)  deletion 
D)  All answers are correct

Question 4

Initiation,elongation,and termination are the three main steps in

Accepted Answer

A)  translation only. 
B)  transcription and translation. 
C)  transcription only. 
D)  photosynthesis. 
A)  translation only. 
B)  transcription and translation. 
C)  transcription only. 
D)  photosynthesis.

Question 5

Changes in gene expression can be adaptive.

Accepted Answer

A) True 
 B)False

Question 6

In a "frameshift" mutation

Accepted Answer

A)  the codon that mutates causes no change in the amino acid specified. 
B)  the codon that mutates causes a stop codon to occur instead of the placement of an amino acid. 
C)  the mutation does not occur in a codon. 
D)  the mutation is caused by an addition or deletion of one or more nucleotides. 
E)  the mutation is not in DNA. 
A)  the codon that mutates causes no change in the amino acid specified. 
B)  the codon that mutates causes a stop codon to occur instead of the placement of an amino acid. 
C)  the mutation does not occur in a codon. 
D)  the mutation is caused by an addition or deletion of one or more nucleotides. 
E)  the mutation is not in DNA.

Question 7

Mutations can be caused by radiation.

Accepted Answer

A) True 
 B)False

Question 8

The enzyme that HIV uses to convert its RNA into DNA is

Accepted Answer

A)  reverse transcriptase. 
B)  DNA polymerase. 
C)  RNA polymerase. 
D)  RNA integrase. 
E)  translase. 
A)  reverse transcriptase. 
B)  DNA polymerase. 
C)  RNA polymerase. 
D)  RNA integrase. 
E)  translase.

Question 9

A highly wound circle of RNA without a protein coat is a

Accepted Answer

A)  virus. 
B)  virion. 
C)  viroid. 
D)  prion. 
E)  prophage. 
A)  virus. 
B)  virion. 
C)  viroid. 
D)  prion. 
E)  prophage.

Question 10

A drug that inhibits reverse transcriptase could be used to fight some viruses.

Accepted Answer

A) True 
 B)False

Question 11

A layer of membrane attached to a virus is called

Accepted Answer

A)  an envelope. 
B)  a protein coat. 
C)  a chromosome. 
D)  a plasmid. 
E)  a nucleus. 
A)  an envelope. 
B)  a protein coat. 
C)  a chromosome. 
D)  a plasmid. 
E)  a nucleus.

Question 12

Our most potent weapon in the fight against viruses is

Accepted Answer

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

Question 13

Proteins that initiate transcription in eukaryotes by recognizing sequences within the promoter region of a gene and attracting RNA polymerase are called:

Accepted Answer

A)  repressors 
B)  inducers 
C)  transcription factors 
D)  TATA boxes 
E)  poly A tails 
A)  repressors 
B)  inducers 
C)  transcription factors 
D)  TATA boxes 
E)  poly A tails

Question 14

A gene is any DNA sequence that is transcribed to any type of RNA.

Accepted Answer

A) True 
 B)False

Question 15

A poly A tail is added to the mature mRNA after transcription.

Accepted Answer

A) True 
 B)False

Question 16

In DNA molecules,

Accepted Answer

A)  cytosine pairs with guanine. 
B)  thymine pairs with uracil. 
C)  adenine pairs with uracil. 
D)  adenine pairs with guanine. 
E)  cytosine pairs with thymine. 
A)  cytosine pairs with guanine. 
B)  thymine pairs with uracil. 
C)  adenine pairs with uracil. 
D)  adenine pairs with guanine. 
E)  cytosine pairs with thymine.

Question 17

How many codons are in the mRNA sequence GGAAUGAAACAGGAACCC?

Accepted Answer

A)  12 
B)  6 
C)  27 
D)  9 
E)  3 
A)  12 
B)  6 
C)  27 
D)  9 
E)  3

Question 18

What process converts the mRNA "message" into a sequence of amino acids?

Accepted Answer

A)  transcription 
B)  replication 
C)  mitosis 
D)  amino acid synthesis 
E)  translation 
A)  transcription 
B)  replication 
C)  mitosis 
D)  amino acid synthesis 
E)  translation

Question 19

-Using the genetic code,how many amino acids are encoded by the following sequence from the start codon and up to the stop codon? AUGCUUGACUAAGUCCCC

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  5
F) 6 
A)  0 
B)  1 
C)  2 
D)  3 
E)  5
F) 6

Question 20

Mutations can be caused by errors in copying DNA.

Accepted Answer

A) True 
 B)False

Exam 7: DNA Structure and Gene Function

The influenza virus contains an RNA genome.Scientists typically need to make a new flu vaccine every year because

The rungs of the DNA ladder are formed by base pairs

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

Initiation,elongation,and termination are the three main steps in

Changes in gene expression can be adaptive.

In a "frameshift" mutation

Mutations can be caused by radiation.

The enzyme that HIV uses to convert its RNA into DNA is

A highly wound circle of RNA without a protein coat is a

A drug that inhibits reverse transcriptase could be used to fight some viruses.

A layer of membrane attached to a virus is called

Our most potent weapon in the fight against viruses is

Proteins that initiate transcription in eukaryotes by recognizing sequences within the promoter region of a gene and attracting RNA polymerase are called:

A gene is any DNA sequence that is transcribed to any type of RNA.

A poly A tail is added to the mature mRNA after transcription.

In DNA molecules,

How many codons are in the mRNA sequence GGAAUGAAACAGGAACCC?

What process converts the mRNA "message" into a sequence of amino acids?

-Using the genetic code,how many amino acids are encoded by the following sequence from the start codon and up to the stop codon? AUGCUUGACUAAGUCCCC

Mutations can be caused by errors in copying DNA.

The Scientific Study of Life

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Photosynthesis

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DNA Replication,Binary Fission,and Mitosis

Sexual Reproduction and Meiosis

Patterns of Inheritance

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Evidence of Evolution

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Evolution and Diversity of Microbial Life

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Populations

Communities and Ecosystems

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

The Nervous System and the Senses

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