A.
Yes, they belong to Domain Eukarya.
B.
Yes, they belong to Domain Archaea.
C.
Yes, they belong to Domain Bacteria.
D.
No, they are not considered to be alive.
2007-03-08 03:41:30 · 11 answers · asked by live~laugh~love 1 in Science & Mathematics ➔ Biology
Viruses do not belong to any of the three domains of life.
2007-03-08 03:45:24 · answer #1 · answered by Brian L 7 · 0⤊ 0⤋
The Domains Of Life
2016-11-07 07:12:38 · answer #2 · answered by ? 4 · 0⤊ 0⤋
They do not belong to the domain Eukarya becuase they do NOT have a centralized area of chromosomes (also known as a nucelus. The are considered a sort of non-living cell... until they are activated by coming in contact with another cell that they will infect. Most only contain RNA OR DNA but usally not both.
Answer: D.
2007-03-08 04:29:14 · answer #3 · answered by sr60308 2 · 1⤊ 0⤋
Answer D.
Viruses do not belong to the above 5 kingdoms of life. They are much smaller and much less complex than cells. They are macromolecular units composed of DNA or RNA surrounded by an outer protein shell. They have no membrane-bound organelles, no ribosomes (organelle site of protein synthesis), no cytoplasm (living contents of a cell), and no source of energy production of their own. They do not exhibit autopoiesis--i.e. they do not have the self-maintenance metabolic reactions of living systems. Viruses lack cellular respiration, ATP-production, gas exchange, etc. However, they do reproduce, but at the expense of the host cell. Like obligate parasites, they are only capable of reproduction within living cells. In a sense, viruses hijack the host cell and force it to produce more viruses through DNA replication and protein synthesis. Outside of their host cells, viruses can survive as minute macromolecular particles.
2007-03-08 03:47:07 · answer #4 · answered by alekoukla 2 · 0⤊ 0⤋
it depends on the definition of "alive".
however A,B,C are wrong, so in this question I would rather answer D.
BTW there is still some "fighting" between scientist if viruses are alive or not, also because recently some viruses has been found with a number of genes bigger than some simple bacteria.
2007-03-08 03:48:46 · answer #5 · answered by scientific_boy3434 5 · 0⤊ 0⤋
D. No - A virus is not a living machine . It is only part of a machine, namely the blueprints. The virus only provides the plans, the cell has done the real living work. Outside of its host the virus shows no living qualities..
2007-03-08 05:31:51 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Nope, they aren't considered living organisms, basically because they don't conform to the MRS NERG laws, and because all a virus is, is a few strands of DNA, surrounded by protein.
2007-03-08 03:45:41 · answer #7 · answered by Anonymous · 0⤊ 0⤋
D. Not alive because it cannot reproduce without a host.
2007-03-08 04:08:46 · answer #8 · answered by lycan_888 2 · 0⤊ 0⤋
According to this website,
"Since viruses are acellular and possess both living and nonliving characteristics, they are considered neither prokaryotic nor eukaryotic. "
2007-03-08 03:51:31 · answer #9 · answered by ANT-a-gonistic 3 · 0⤊ 0⤋
The answer is D : No, they are not considered to be alive.
2007-03-08 03:44:40 · answer #10 · answered by tsksotc 4 · 0⤊ 0⤋