Which of the following is true about virusses ?help ! urgent

virusses divide by binary fission
virusses are obligate intracellular parasites
both
none

2nd qs
viral envelopes are composed of
nucleotides
polyphosphate
chlorophyll
all of these
none of these

1) B (intracellular parasites)
2) E (none of these; they are composed of lipid bilayer)

1.virusses are obligate intracellular parasites
2.none of these - envelopes typically are derived from portions of the host cell membranes (phospholipids and proteins), but include some viral glycoproteins

parasites.

nucleotides.