Are Sperm Alive?
earias1 at uic.edu
Sun Jan 12 01:34:52 EST 1997
Dr E. Buxbaum wrote:
> Life can be defined by five characteristics:
> 1) Form: At any time there is a distinct border between a living organism
> and its environment, rather than a gradual transition. The form may
> change over time (amoebae), but it is always given.
> 2) Mobility: All life forms are mobile, at least at some stage in their
> life. Note that for example the orientation of a leaf towards the sun in
> plants counts as mobility.
> 3) Composition: Living organism maintain a concentration gradient of
> substances between them and their environment.
> 4) Propagation: Living organisms are able to reproduce themselfs.
> 5) Metabolism: Living organisms use energy from their environment to
> achieve the above mentioned functions.
> Going through this checklist, you will find that sperms are alive, but
> for example viruses are not (no metabolism).
According to your 4th definition of life...sperm CAN reproduce "themselves"...I
seriously don't think so.
University of Illinois at Chicago
Dept of Physiology & Biophysics
835 S. Wolcott Avenue
Chicago, IL 60612
e-mail: earias1 at uic.edu
More information about the Cellbiol