how will you know if a thing is alive?
2007-03-07 23:33:40 · 3 answers · asked by cyndie 1 in Science & Mathematics ➔ Biology
Right from prokaryotic bacteria to the eukaryotic Homo sapiens, all are said to be alive, only if any one of the gene exressions is in vogue. It is a fact that is untold that a bacterium, which continuously divide, renders at least one of its DNA strands to either of its daughter cell thro' asexual reproduction. The case is the same with the Homo sapiens, in which also at least one of the trillions of cells is rendered from each individual parent to the next generation. Therefore, it is virtually false but really true that there is no death for any individual at cellular or at least at molecular level. It also suits to viruses, which have the ability to perpetuate, when they avail a cell, pro or eukaryotic in nuclear level.
2007-03-08 01:02:38 · answer #1 · answered by Anonymous · 0⤊ 1⤋
There are several characteristics that determine if something is alive. They include, movement (even plants move), the ability to reproduce, growth (normally cell division),and communication (even amoebas communicate).
2007-03-08 09:06:19 · answer #2 · answered by gerafalop 7 · 0⤊ 0⤋
If they are moving, and if they have a pulse and a heartbeat
2007-03-08 07:41:36 · answer #3 · answered by The Kymster<3. 2 · 0⤊ 2⤋