Viruses

True or False Viruses arose from the Domain Bacteria and Archae yet no fossil records have been found.

• True

• False

Pick which of the following are true about viruses.

• acellular entities

• parasitic

• not part of any kingdom

• infect plants, animals, and bacteria

In 1886, _________ demonstrated how the tobacco mosaic disease.

• Mayer

• Pasteur

• Ivanowski

• Mendel

How are viruses classified? Pick all that apply.

• morphology

• what nucleic acids they have

• single or double stranded DNA/RNA

• viral replicative cycles

The devolution/regressive hypothesis says that viruses came about how?

• viruses evolved from free living cells

• viruses have either RNA or DNA genome

• they escaped from a host cell

• unknown as to where they came from

The morphology of viruses indicate they contain the following parts. What two parts do they have to contain?

• Protein coat/capsid

• DNA or RNA

• cell wall

• cell membrane

The most complex virus that is studied is

• bacteriophage

• polio virus

• plantar warts

• hepatitis

RNA viruses include

• hepatitis C

• measles

• rabies

• polio

Pick all that apply about they types of nucleic acids present in viruses.

• use DNA or RNA core

• contain only those genes that encode proteins that the virus cannot get from the host cell

• genetic material is circular or linear

• most don't contain any nucleic acid

True or False Mutations occur in RNA viruses more than those of DNA viruses.

• True

• FALSE