Question 1

In phage  λ\lambdaλ , the relative affinities of the lambda repressor and the cro protein to the three binding sites in the OR region are:

Accepted Answer

A)  the same.
B)  inversely proportional.
C)  unrelated. D) A) and B)
E) A) and C)

Question 2

What is the correct order of the reproductive cycle of viruses?

Accepted Answer

A)  Attachment-Entry-Viral assembly-Integration-Synthesis of viral components-Release
B)  Viral Assembly-Attachment-Entry-Integration-Synthesis of viral components-Release
C)  Attachment-Entry-Integration-Synthesis of viral components-Viral assembly-Release
D)  Integration-Attachment-Entry-Viral assembly-Synthesis of viral components-ReleaseE) All of the above
F) B) and C)

Question 3

A bacteriophage that is physically integrated into the host chromosome is called a _______.

Accepted Answer

A)  episome
B)  virulent phage
C)  prophage
D)  capsidE) A) and C)
F) All of the above

Question 4

Infectious mononucleosis is caused by the Epstein-Barr virus, and patients often exhibit a fever, sore throat, swollen glands, and fatigue for several weeks. In some patients, the virus can reactivate later and cause physical symptoms once again. This is likely because

Accepted Answer

A)  they were misdiagnosed the first time, and only really were infected by the virus the second time they became sick.
B)  the virus was latent in these patients, and then switched to the active form and began making new virus particles.
C)  the patients had the virus initially, and they became sick again at the time the virus became latent.
D)  the Epstein-Barr virus is an emerging virus so we do not know much about its infectious life cycle.E) A) and B)
F) A) and C)

Question 5

The HIV genome is especially prone to mutation because

Accepted Answer

A)  it is made of DNA.
B)  it is an emerging virus.
C)  it is copied by reverse transcriptase, which lacks a proofreading function.
D)  of the many different drugs HIV patients must take.E) C) and D)
F) None of the above

Exam 17: Genetics of Viruses

What is the correct order of the reproductive cycle of viruses?

Correct Answer
verified

Infectious mononucleosis is caused by the Epstein-Barr virus, and patients often exhibit a fever, sore throat, swollen glands, and fatigue for several weeks. In some patients, the virus can reactivate later and cause physical symptoms once again. This is likely because

Correct Answer
verified

The HIV genome is especially prone to mutation because

Correct Answer
verified

A bacteriophage that is physically integrated into the host chromosome is called a _______.

Correct Answer
verified

In phage $\lambda$ , the relative affinities of the lambda repressor and the cro protein to the three binding sites in the O_R region are:

Correct Answer
verified

Exam 17: Genetics of Viruses

What is the correct order of the reproductive cycle of viruses?

Correct AnswerverifiedShow Answer

Infectious mononucleosis is caused by the Epstein-Barr virus, and patients often exhibit a fever, sore throat, swollen glands, and fatigue for several weeks. In some patients, the virus can reactivate later and cause physical symptoms once again. This is likely because

Correct AnswerverifiedShow Answer

The HIV genome is especially prone to mutation because

Correct AnswerverifiedShow Answer

A bacteriophage that is physically integrated into the host chromosome is called a _______.

Correct AnswerverifiedShow Answer

In phage λ\lambdaλ , the relative affinities of the lambda repressor and the cro protein to the three binding sites in the OR region are:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

In phage $\lambda$ , the relative affinities of the lambda repressor and the cro protein to the three binding sites in the O_R region are:

Correct Answer
verified