a. lack cell structure
b. cannot be seen w/out a microscope
c. contain genetic material
d. cause human disease
e. lack a nucleus
Please cite sources.
Thanks so much!
2007-10-19 12:47:20 · 3 answers · asked by ms.curious 2 in Science & Mathematics ➔ Biology
It's A.
Bacteria do not have a Nucleus so it cannot be E. Bacteria also cause human disease, as do Eukaryotes like Yeast and Mold, so it can't be D. It's not C because all living things contain some sort of nucleic acid. Again bacteria and most Eukaryotes cannot be seen without a microscope.
All viruses are is Nucelic acid, inside of a protein coat, thats all. There are no functioning structures inside the virion (virus coat).
Hope this helps.
2007-10-19 13:00:03 · answer #1 · answered by Robert N 3 · 2⤊ 0⤋
E) Lack a nucleus. A virus is essentially Viral DNA packaged in protein.
2007-10-19 19:55:09 · answer #2 · answered by Emerson 5 · 0⤊ 2⤋
Viruses are not cells so have no cell structure.
http://universalfacts.blogspot.com/2007/07/major-infectious-disease-causing-agents.html
2007-10-19 20:29:20 · answer #3 · answered by gardengallivant 7 · 0⤊ 0⤋