CUA #2 Review

The structure of a virus is simpler than the structure of a cell. Typically, a virus is composed only of -

• Genetic material, a protein coat, and attachment proteins

• Transfer ribonucleic acid (tRNA) and enzymes

• A nucleus, a Golgi apparatus, and cytoplasm

• A cytoskeleton, chloroplasts, and a mitochondrion

Like cells, viruses contain-

• Genetic Material

• Mitochondria

• Vacuoles

• Chloroplasts

A photograph of a virus is shown below. The projections on the surface of the virus allows the virus to?

• Most inside a host cell

• Control a host cell's DNA

• Attach to a host cell

• Signal other viruses to infect a host cell

Three things are depicted below. Genetic material would best fit into which area?

• W

• X

• Y

• Z

Viruses are able to infect cells because they share a common genetic code and are to use host cell enzymes to carry out protein synthesis. There are some structures which are unique to viruses and not found in cells. These include:

• I only

• II only

• I and II only

• II and III only

Viruses are living organisms.

• True

• False

What is the outer layer of a virus called?

• Bacteriophage

• Capsid

• Influenza

• Cell wall

What type of genetic material is stored in a virus?

• DNA

• RNA

• Both at once

• Neither DNA or RNA

• Either DNA or RNA but never both.

How does the virus attach to the host cell?

• by using protons

• by using acceptors

• by using it's capsid

• by using tail fibers

All viruses look exactly alike.

• True

• False