Question 1

The stage of viral replication in which the virus binds to a cell surface receptor is

Accepted Answer

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

Question 2

In DNA,A binds to C.

Accepted Answer

A) True 
 B)False

Question 3

If E.coli bacterium are grown in the presence of lactose

Accepted Answer

A)   the repressor will bind the operator, thus allowing transcription of the lac operon genes.
B)   the repressor will not bind the operator, thus preventing transcription of the lac operon genes.
C)   the repressor will not bind the operator, thus allowing transcription of the lac operon genes.
D)   the repressor will bind the operator, thus preventing transcription of the lac operon genes.
E)   No answer is correct.F) A) and B)
G) B) and C)

Question 4

Viruses

Accepted Answer

A)   consist of only a single cell.
B)   are smaller than cells.
C)   consist of multiple cells.
D)   contain a nucleus.
E)   contain ribosomes.F) A) and C)
G) B) and C)

Question 5

If one strand of DNA has the nitrogenous base sequence ATTCGACGCTA,then the complementary strand has the nitrogenous base sequence

Accepted Answer

A)   TAAGCTGCGAT.
B)   ATCGCAGCTTA.
C)   UAAGCUGCGAU.
D)   ATTCGACGCTA.E) C) and D)
F) A) and B)

Question 6

Cystic fibrosis may be caused by a protein that does not fold correctly.

Accepted Answer

A) True 
 B)False

Question 7

If you found a living Neandertal,genetic analysis of FOXP2 would show maximal similarity to the homologous gene in mice.

Accepted Answer

A) True 
 B)False

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

RNA processing involves covalently attaching a piece of RNA to a piece of DNA.

Accepted Answer

A) True 
 B)False

Question 10

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 11

DNA differs from RNA because,unlike RNA,

Accepted Answer

A)   DNA contains uracil.
B)   DNA contains thymine.
C)   DNA can catalyze some chemical reactions.
D)   DNA is single-stranded.
E)   DNA contains ribose.F) C) and D)
G) B) and C)

Question 12

The genetic information in viruses

Accepted Answer

A)   is found in the nucleus of the virus.
B)   is always DNA.
C)   is either DNA or RNA.
D)   is always RNA.
E)   can be replicated outside of a cell.F) B) and E)
G) C) and D)

Question 13

Which of the following diseases is caused by something other than viruses?

Accepted Answer

A)   influenza
B)   mononucleosis
C)   polio
D)   AIDS
E)   diabetesF) B) and E)
G) B) and C)

Question 14

A cell can receive new genes from a virus and then produce a new set of proteins.

Accepted Answer

A) True 
 B)False

Question 15

-Using the genetic code,what are the amino acids encoded by the sequence 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) None of the above

Question 16

What type of RNA carries amino acids to the ribosome?

Accepted Answer

A)   complementary RNA
B)   messenger RNA
C)   ribosomal RNA
D)   double-stranded RNA
E)   transfer RNAF) None of the above
G) All of the above

Question 17

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) All of the above
F) A) and D)

Question 18

A tRNA molecule is "bilingual" because it binds to

Accepted Answer

A)   amino acids and DNA.
B)   DNA and mRNA codons.
C)   promoters and amino acids.
D)   codons of mRNA and amino acids.
E)   promoters and terminators.F) C) and E)
G) A) and D)

Question 19

If you were a vet examining a cat with an illness,and tests showed that a viral infection was causing the cat's cells to burst,you would say that the cat had

Accepted Answer

A)   a rare form of viral infection.
B)   a transgenic infection.
C)   a lysogenic infection.
D)   a lytic infection.
E)   a systematic infection.F) None of the above
G) A) and B)

Question 20

Most viruses

Accepted Answer

A)   infect only a few closely related species.
B)   infect only animal cells.
C)   infect a wide variety of organisms.
D)   cannot infect living cells.
E)   infect only plant cells.F) A) and D)
G) C) and D)

Exam 7: DNA Structure and Gene Function

-Using the genetic code,what are the amino acids encoded by the sequence AUGUCAACGUGA?

Correct AnswerverifiedShow Answer

The genetic information in viruses

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A cell can receive new genes from a virus and then produce a new set of proteins.

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

What type of RNA carries amino acids to the ribosome?

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Cystic fibrosis may be caused by a protein that does not fold correctly.

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

In DNA,A binds to C.

Correct AnswerverifiedShow Answer

If you found a living Neandertal,genetic analysis of FOXP2 would show maximal similarity to the homologous gene in mice.

Correct AnswerverifiedShow Answer

A tRNA molecule is "bilingual" because it binds to

Correct AnswerverifiedShow Answer

DNA differs from RNA because,unlike RNA,

Correct AnswerverifiedShow Answer

Viruses

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If E.coli bacterium are grown in the presence of lactose

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Which of the following diseases is caused by something other than viruses?

Correct AnswerverifiedShow Answer

Most viruses

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If one strand of DNA has the nitrogenous base sequence ATTCGACGCTA,then the complementary strand has the nitrogenous base sequence

Correct AnswerverifiedShow Answer

RNA processing involves covalently attaching a piece of RNA to a piece of DNA.

Correct AnswerverifiedShow Answer

If you were a vet examining a cat with an illness,and tests showed that a viral infection was causing the cat's cells to burst,you would say that the cat had

Correct AnswerverifiedShow Answer

The stage of viral replication in which the virus binds to a cell surface receptor is

Correct AnswerverifiedShow Answer

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