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Exam 5: Viral Structure and Life Cycles

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Question 1

Multiple Choice

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Which of the following is incorrect about prophages?

A) present when the virus is in lysogeny
B) formed when viral DNA enters the bacterial chromosome
C) replicated with host DNA and passed on to progeny
D) cause lysis of host cells
E) occur when temperate phages enter host cells

F) B) and E)
G) A) and B)

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Question 2

Multiple Choice

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Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format. Mrs. Hammond is a 79-year-old woman who has been a resident on your floor for the past 5 years. She has been complaining of pain, burning, and tingling on her left side. Today, you observe fluid-filled blisters wrapping around the left side of her torso in a single line. The physician diagnoses her with shingles and places her on contact precautions. -Mr.Hammond inquires how his wife contracted this viral infection,since she has not come in contact with anyone who has shingles.You recall from microbiology that varicella zoster virus can remain in a chronic latent state in a host by

A) integrating into a bacteriophage.
B) turning on oncogenes.
C) attacking T cells.
D) hiding from the immune system within nerve cells.

E) All of the above
F) None of the above

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D

Question 3

Multiple Choice

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Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format. Mrs. Hammond is a 79-year-old woman who has been a resident on your floor for the past 5 years. She has been complaining of pain, burning, and tingling on her left side. Today, you observe fluid-filled blisters wrapping around the left side of her torso in a single line. The physician diagnoses her with shingles and places her on contact precautions. -Viruses contain the necessary tools to invade and control a host cell.These tools may consist of a

The adeno-associated virus (AAV)is a prion.

Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format. Mr. Olson arrived in the emergency department with his 10-month-old son. Mr. Olson states he had difficulty waking his son from a nap this afternoon. Additionally, the infant was unable to hold his spoon at dinner and did not seem to be chewing correctly. You observe that the patient has a very weak cry. Mr. Olson noted that the only difference in his son’s diet was the ingestion of fresh honey on his toast at breakfast yesterday. You suspect Clostridium botulinum infection due to the ingestion of bacterial endospores. -Even though it is a bacterium,Clostridium botulinum can be made more pathogenic once infected with a(n)

Infectious naked strands of RNA that affect plants are called

The core of every virus particle always contains

Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format. 5-month-old Emily Harter presented to the pediatrician’s office with a fever, dyspnea (labored breathing) , wheezing, nasal flaring, and a harsh cough. Rapid testing of nasal swabs obtained from Emily revealed RSV disease. Mrs. Harter is distraught to learn that her daughter will be admitted to the hospital, and will receive intravenous hydration and oxygen therapy. -After the Harters leave for the hospital,you recall the challenges and limitations researching animal viruses such as RSV.Which of the following is not utilized in the cultivation of animal viruses?

A(n) _____ is the protein shell around the nucleic acid core of a virus.

When a bacterium acquires a trait from its temperate phage,it is called

Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format. 5-month-old Emily Harter presented to the pediatrician’s office with a fever, dyspnea (labored breathing) , wheezing, nasal flaring, and a harsh cough. Rapid testing of nasal swabs obtained from Emily revealed RSV disease. Mrs. Harter is distraught to learn that her daughter will be admitted to the hospital, and will receive intravenous hydration and oxygen therapy. -Mrs.Harter questions which antibiotic will be given to treat her daughter's infection.You inform her that

Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format. Mr. Olson arrived in the emergency department with his 10-month-old son. Mr. Olson states he had difficulty waking his son from a nap this afternoon. Additionally, the infant was unable to hold his spoon at dinner and did not seem to be chewing correctly. You observe that the patient has a very weak cry. Mr. Olson noted that the only difference in his son’s diet was the ingestion of fresh honey on his toast at breakfast yesterday. You suspect Clostridium botulinum infection due to the ingestion of bacterial endospores. -A bacterium acquiring a new trait from a bacteriophage is a phenomenon called

In general,most DNA viruses multiply in the host cell's _____,while most RNA viruses multiply in the host cell's _____.

Spikes are glycoproteins of the virus capsid.

During lysogeny,an inactive prophage state occurs when the viral DNA is inserted into the

Creutzfeld-Jacob disease is

Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format. 5-month-old Emily Harter presented to the pediatrician’s office with a fever, dyspnea (labored breathing) , wheezing, nasal flaring, and a harsh cough. Rapid testing of nasal swabs obtained from Emily revealed RSV disease. Mrs. Harter is distraught to learn that her daughter will be admitted to the hospital, and will receive intravenous hydration and oxygen therapy. -RSV disease is caused by the respiratory syncytial virus (RSV) .RSV is a(n)

Viral spikes are inserted into the host cell membrane before budding or exocytosis.

The envelope of enveloped viruses is

Satellite viruses are