Course

General Biology

Study Pack

Set 26 Introduction To Viruses

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Question 1

(Multiple Choice)

Free
Which of the following statements best supports the argument that viruses are nonliving?

A) They do not carry out metabolic processes.
B) Their DNA does not encode proteins.
C) They have RNA rather than DNA.
D) They do not evolve.

Answer

Question 2

(Multiple Choice)

Free
The host range of a virus is determined by whether ________.

A) the enzymes carried by the virus are compatible with the host
B) the genome of the virus is made of DNA or RNA
C) it is an enveloped or non-enveloped virus
D) the proteins on virus surface can bind with proteins on the host surface

Answer

Question 3

(Multiple Choice)

Free
Use the following figure and information to answer the question. Use the following figure and information to answer the question.   Cells were infected with approximately 1,000 copies of either virus A or virus B at the 0 time point. At five-minute intervals, a sample of the virus and cell mixture was removed. All intact cells were removed from the sample, and the number of viruses per milliliter of culture was determined. Based on the data provided, the lytic cycle of virus B is closest to ________. A) 15 minutes B) 30 minutes C) 45 minutes D) 60 minutes Cells were infected with approximately 1,000 copies of either virus A or virus B at the 0 time point. At five-minute intervals, a sample of the virus and cell mixture was removed. All intact cells were removed from the sample, and the number of viruses per milliliter of culture was determined.
Based on the data provided, the lytic cycle of virus B is closest to ________.

A) 15 minutes
B) 30 minutes
C) 45 minutes
D) 60 minutes

Answer