Question 1

In eukaryotic cells,sequences of mRNA removed before translation are called

Accepted Answer

A)  introns.
B)  anticodons.
C)  exons.
D)  rRNA.
E)  terminators.F) A) and B)
G) B) and C)

Question 2

The "Central Dogma" of molecular biology described by Watson and Crick describes

Accepted Answer

A)  the passing of genetic information from DNA to RNA by translation.
B)  the passing of genetic information from RNA to protein by transcription.
C)  the inheritance of traits between generations.
D)  the production of energy in a cell.
E)  the directional flow of genetic information in cells.F) C) and D)
G) D) and E)

Question 3

If the DNA in a cell consists of 20% adenine,it will also have _____ thymine.

Accepted Answer

A)  30%
B)  80%
C)  40%
D)  20%
E)  10%F) C) and D)
G) B) and E)

Question 4

How does the spread of viruses differ between plants and animals?

Accepted Answer

A)  Viruses must penetrate through cell walls of plant cells and not animal cells.
B)  Viruses spread faster in plants than animals because of photosynthesis.
C)  Viruses do not spread to plants,only animals.
D)  Viruses spread more slowly in plants than animals because of photosynthesis.
E)  Viruses that affect plants are all DNA viruses.F) All of the above
G) A) and E)

Question 5

The stage of viral replication in which the host cell produces viral nucleic acids and proteins is

Accepted Answer

A)  release.
B)  attachment.
C)  synthesis.
D)  penetration.
E)  assembly.F) B) and C)
G) None of the above

Question 6

Since viruses have no active methods of entering plant cells,they must rely upon mechanical insults to plants for entry.What probably prevents viruses from easily entering plant cells?

Accepted Answer

A)  the cell wall on the virus
B)  the plasma membrane on the plant
C)  the cell wall on the plant
D)  the plasma membrane on the virus
E)  the protein coat on the virusF) None of the above
G) C) and D)

Question 7

Antibiotic resistance enhances the reproductive success of bacteria that have it.

Accepted Answer

A) True 
 B)False

Question 8

A change in a cell's DNA sequence is

Accepted Answer

A)  replication.
B)  transcription.
C)  a mutation.
D)  translation.
E)  an operon.F) C) and D)
G) B) and D)

Question 9

if you were creating a system for protein synthesis in a test tube,for RNA you would only need tRNA and rRNA.

Accepted Answer

A) True 
 B)False

Question 10

Where is the majority of DNA located in a human cell?

Accepted Answer

A)  nucleus
B)  mitochondrion
C)  chloroplast
D)  ribosomeE) None of the above
F) C) and D)

Question 11

Using the genetic code,what is the sequence of amino acids represented by the codons AUGUCAACGUGA?

Accepted Answer

A)  Met,Ser,Thr,(Stop) 
B)  Tyr,Ser,Cys,Thr
C)  Ser,Tyr,Leu,Val
D)  Met,Val,Asp,MetE) A) and B)
F) A) and D)

Question 12

The DNA sequence ATGCATGC will pair with which of the following RNA strands?

Accepted Answer

A)  UACGUACG
B)  CGAUCGAU
C)  AUGCAUGC
D)  TAGCTAGC
E)  UAGCTAGCF) C) and D)
G) C) and E)

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

Mutations can be caused by radiation.

Accepted Answer

A) True 
 B)False

Question 15

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)  translationF) B) and D)
G) A) and E)

Question 16

The stage of viral replication in which the viral nucleic acid is released inside the cell is

Accepted Answer

A)  penetration.
B)  release.
C)  attachment.
D)  synthesis.
E)  assembly.F) None of the above
G) C) and D)

Question 17

Only one of the two strands of DNA is transcribed because

Accepted Answer

A)  RNA polymerase binds to the promoter,initiating transcription on only one strand of DNA.
B)  the start of transcription is random along the chromosome and does not always occur on a gene.
C)  RNA polymerase binds to the terminator,stopping transcription on one strand of DNA.
D)  both strands are transcribed,but only one strand of DNA contains a reading frame.
E)  DNA consists of only one strand in the nucleus of the cell.F) A) and B)
G) All of the above

Question 18

"Mad cow disease" is caused by a viroid.

Accepted Answer

A) True 
 B)False

Question 19

A gene is an RNA sequence that is transcribed to mRNA only.

Accepted Answer

A) True 
 B)False

Question 20

What did scientists discover was the primary cause for genetically controlled language disorder connected to language ability in other species?

Accepted Answer

A)  The cause was one mutation in a single gene on one chromosome.
B)  The disorder was not inherited but related to diet.
C)  Affected family members were lacking vocal chords.
D)  The cause was multiple mutations in multiple genes on one chromosome.
E)  The cause was multiple mutations in multiple genes on many chromosomes.F) A) and B)
G) A) and C)

Exam 7: Dna Structure and Gene Function

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

Correct AnswerverifiedShow Answer

The stage of viral replication in which the viral nucleic acid is released inside the cell is

Correct AnswerverifiedShow Answer

The stage of viral replication in which the host cell produces viral nucleic acids and proteins is

Correct AnswerverifiedShow Answer

If the DNA in a cell consists of 20% adenine,it will also have _____ thymine.

Correct AnswerverifiedShow Answer

A gene is an RNA sequence that is transcribed to mRNA only.

Correct AnswerverifiedShow Answer

Using the genetic code,what is the sequence of amino acids represented by the codons AUGUCAACGUGA?

Correct AnswerverifiedShow Answer

Mutations can be caused by radiation.

Correct AnswerverifiedShow Answer

A change in a cell's DNA sequence is

Correct AnswerverifiedShow Answer

In eukaryotic cells,sequences of mRNA removed before translation are called

Correct AnswerverifiedShow Answer

The "Central Dogma" of molecular biology described by Watson and Crick describes

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Where is the majority of DNA located in a human cell?

Correct AnswerverifiedShow Answer

The DNA sequence ATGCATGC will pair with which of the following RNA strands?

Correct AnswerverifiedShow Answer

Antibiotic resistance enhances the reproductive success of bacteria that have it.

Correct AnswerverifiedShow Answer

"Mad cow disease" is caused by a viroid.

Correct AnswerverifiedShow Answer

How does the spread of viruses differ between plants and animals?

Correct AnswerverifiedShow Answer

Since viruses have no active methods of entering plant cells,they must rely upon mechanical insults to plants for entry.What probably prevents viruses from easily entering plant cells?

Correct AnswerverifiedShow Answer

if you were creating a system for protein synthesis in a test tube,for RNA you would only need tRNA and rRNA.

Correct AnswerverifiedShow Answer

Only one of the two strands of DNA is transcribed because

Correct AnswerverifiedShow Answer

What did scientists discover was the primary cause for genetically controlled language disorder connected to language ability in other species?

Correct AnswerverifiedShow Answer

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