viruses

Question 1

t/f viruses are much simper in structure compared to euukaryote and prokaryotes

Answer 1

true. (pg 392)

Question 2

virus

Answer 2

is an infectious particle consisting of little more than genes packed in a protein coat, some viruses are surrounded by membraneous envelope

Question 3

in gene therapy, viruses are used a

Answer 3

agents of gene transfer

Question 4

the tinest viruses are

Answer 4

20 nm in diameter

Question 5

the largest known virus has a diameter of

Answer 5

several hundred nanometers, this one is barely visible under the light microsope.

Question 6

it would be best to see a virus under the_______microscope

Answer 6

electron

Question 7

A virus is called a DNA virus or an RNA

Answer 7

virus, based on the kind of nucleic acid that makes up its

genome. I

Question 8

The smallest viruses known have only three

Answer 8

genes in their genome, while the largest have several hundred to a thousand

Question 9

the protein shell enclosing the viral genome is called

Answer 9

capsid

Question 10

Depending on the type of virus, the capsid may be

Answer 10

rod-shaped, polyhedral, or more complex in shape

Question 11

Capsids are built from a large number of protein subunits

Answer 11

called capsomeres,

Question 12

rod shaped viruses are commonly called

Answer 12

helictal viruses