From owner-metabolic-reg@net.bio.net Thu Jan 06 22:00:00 1994
Newsgroups: bionet.metabolic-reg
Path: biosci!daresbury!doc.ic.ac.uk!warwick!uknet!pipex!howland.reston.ans.net!torn!utnut!alchemy.chem.utoronto.ca!mroussel
From: mroussel@alchemy.chem.utoronto.ca (Marc Roussel)
Subject: Re: photosynthesis, exo or endo
Message-ID: <1994Jan7.230936.5474@alchemy.chem.utoronto.ca>
Date: Fri, 7 Jan 1994 23:09:36 GMT
Distribution: bionet
References: <2gk4pa$c64@mserv1.dl.ac.uk>
Organization: Department of Chemistry, University of Toronto
Lines: 15

In article <2gk4pa$c64@mserv1.dl.ac.uk> SCHLOSSER@ciit.org writes:
>What if one where raising a photsynthetic organism in a bio-reactor that
>is large enough that heat-transfer (cooling) is a problem?

     I'm having trouble imagining a setup in which this would be a
problem, regardless of the amount of heat evolved.  Perhaps you could
explain what a "bio-reactor" is.  Photosynthetic organisms need access
to light and that limits how densely they can be packed in the optical
path, with obvious implications for heat dissipation.  (Photosynthetic
organisms have two basic choices:  (1) cover the surface completely but
not very deeply or (2) disperse through the medium at a low density.  In
both cases, heat dissipation should be facile.)

				Marc R. Roussel
                                mroussel@alchemy.chem.utoronto.ca

.