Which of the following statements about viruses is false? a. Viruses require a host cell to reproduce. b. Viruses are sensitive to interferons. c. Viral infections can generally be controlled with antibiotics. d. Viruses encode their own genome.

Which of the following is not true of viruses? U A. They have a prokaryotic cell structure O B. They can cause disease in plants O C. They can have a preference for infecting specific cells in the human body O D. They have DNA or RNA as their genetic material

An apple grower notices that several of his apple trees with fungi growing on their trunks have developed necrotic ring spots, while other trees in the orchard that lack fungi appear healthy. What is the most likely conclusion the farmer can make about the virus infecting his apple trees? a. The apple trees were infected by horizontal transmission. b. The fungi carry disease. c. The fungi attract disease-carrying insects. d. The apple trees were infected by vertical transmission.

A prophage is a/an ___________stage in the cycle of ____________ .a. latent, bacterial virusesb. infective, RNA virusesc. early, poxvirusesd. late, enveloped viruses

The viral ________ play(s) a role in attaching a virion to the host cell. a. core b. capsid c. envelope d. both b and c

Explain how the attachment of viruses to bacterial cells is different from the attachment of viruses to animal cells.

The host protiens specific for individual virus classes are: a. Docking proteins b. DNA polymerases c. Proteases d. RNases

Which of the following is a reason that scientists do not classify viruses as living things? A. They must infect a host because they cannot reproduce on their own. B. They contain DNA, like all living organisms. C. The experience evolution through natural selection. D. They replicate themselves and reproduce

Which of the following is a commonality between coxsackievirus A16 infection and a varicella zoster infection?Choose one: A.  Both infections are caused by viruses in the herpes family. B.  Each disease is usually mild and self-limiting in children but is more severe in adults. C.  Both viruses can cause a spotted rash to appear on the palms of the hands and soles of the feet. D.  There is a vaccine available for both viruses.

What type of virus is more vulnerable to being inactivated?  a. Non-enveloped b. enveloped viruses c. RNA viruses d. DNA viruses