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JMDMT #741 Microfossils of Cyanobacteria in Carbonaceous Meteorites
The James M. DuPont Meteorite Collection - Sagan''' reports "the most optimistic extrapolation from existing laboratory ultraviolet experimental data" for the quantum yield of organic molecules by Miller-Urey-* type syn- theses is 1 part in 1()(),()()0 parts, and the products of these syntheses are neither solely nor entirely the compounds made by living things. Organisms are apparently in excess of a thousand times more efficient than abiotic reactions which may have occurred in a primordial environment.- Although some nonbiological process under some presently undelinable conditions may duplicate the productive capacities of living cells, available data support the view that detectable concentrations
Channel: Education
Uploaded: November 30, 1999 at 12:00 am
Author: h4ck3rm1k3
Length: 00:53
Rating: N/A
Views: 9
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