Ch. 6 Review Questions from Book.

Enveloped viruses carry surface receptors called? A. Buds B. Spikes C. Fibers D. Sheaths

B

Viruses that persist in the cell and cause recurrent disease are considered? A. Onogenic B. Cytopathic C. Latent D. Resistant

C

The envelope of an animal virus is derived from the _________ of its host cell. A. Cell wall B. Membrane C. Glycocalyx D. Receptors

B

The nuclei can acid of a virus is? A. DNA only B. RNA only C. Both DNA and RNA D. Either DNA or RNA

D

The nuclei can acid of animals viruses enters the host cell though? A. Injection B. Fusion C. Endocytosis D. Both b and c

D

Viruses are known to infect? A. Plants B. Bacteria C. Fungi D. All organisms

D

Viruses cannot be cultivated in? A. Cell culture B. Bird embryos C. Live mammals D. Blood agar

D

The capsid is composed of protein subunits called? A. Spikes B. Protomers C. Virons D. Capsomers

D

Which of these is not a general pattern of virus morphology? A. Enveloped, helical B. Naked, icosahedral C. Enveloped, icosahedral D. Complex, helical

D

Which of these is true of prion? A. They are small RNA viruses B. They replicate in the nucleus C. They lack protein D. They cause death of brain cells

D

A prophage is a/an __________ stage in the cycle of ________. A. Latent, RNA viruses B. Infective, RNA viruses C. Early, pox viruses D. Late, enveloped viruses

A

Clear patches in cell cultures that indicate sites of virus infection are called? A. Plaques B. Pocks C. Colonies D. Prions

A

In general, RNA viruses multiply in the cell _______ and DNA viruses multiply in the cell ______. A. Nucleus, cytoplasm B. Cytoplasm, nucleus C. Vesicles, ribosomes D. Endoplasmic reticulum, nucleolus

B

The general steps in viral multiplication cycle are?

Adsorption, penetration, synthesis, assembly, and release

A virus is a tiny infectious? A. Cell B. Living thing C. Particle D. Nucleic acid

C