Which traits describe the virus that causes the common cold?
a. it is an rna virus with a complex capsid surrounded by an envelope.
b. it is a dna virus with a complex capsid surrounded by an envelope.
c. it is an rna virus with a helical capsid surrounded by an envelope.
d. it is a dna virus with an icosahedral capsid surrounded by an envelope.

There are few cells in the body that do not undergo mitosis: most somatic cells divide regularly, some more than others. take for example the cells that line the digestive tract. these cells must be frequently replaced because they are constantly eroded by the movement of food through the tract. what mechanism(s) is/are in place to ensure that these cells are exact copies of the mother cell