| 释义 |
ˌpalæobioˈchemistry
Also (chiefly U.S.) paleo-.
[f. palæo-, paleo- + biochemistry.]
The biochemistry of fossils and of organisms of the geological past, esp. as a means of investigating phylogeny; the investigation of the evolutionary development of biochemical processes.
1954Carnegie Inst. Yearbk. 1953–4 97 (heading) Paleo⁓biochemistry. 1966Science 6 May 762/2 The Fig Tree organisms are comparable in size, shape, complexity of structure, and isolated habit to many modern bacillar bacteria. Although they may have had a nonphoto⁓synthetic metabolism, there is insufficient information available about their paleobiochemistry to realistically evaluate such a suggestion. 1967Compar. Biochem. & Physiol. XX. 553 (heading) Paleobiochemistry of molluscan shell proteins. 1969Collier's Encycl. Year Bk. 406 In one of the first applications of paleobiochemistry it has been found that hydrocarbon compounds in rock 3 billion years old may be composed of fossilized chlorophyll. 1969G. Eglinton in Eglinton & Murphy Org. Geochem. ii. 21 Two main approaches can be taken to the biochemistry of organisms in past times. The first is to examine fossil specimens in the hope that some of the information is still there in the form of protein structure, secondary metabolites, etc... The second is to examine the biochemistry of present-day living organisms and make phylogenetic comparisons. From these one can attempt to infer evolutionary sequences in the development of biochemical processes..; this approach is known variously as paleobiochemistry, evolutionary biochemistry and chemical paleogenetics. 1969M. Florkin in Ibid. xx. 498 Structurally preserved biopolymers kept in situ in their anatomical location in fossils..should constitute the most reliable material for studies in paleobiochemistry.
So ˌpalæobioˈchemical a.
Quot. 1937 is an isolated example, unrelated to the later use of palæobiochemistry.
1937Bull. Amer. Assoc. Petroleum Geologists XXI. 770 Theories which appear to be in part applicable to such an accumulation are (1) the existence of paleo-biochemical conditions associated with the shallow-water near-shore deposits which controlled the abundance of petroleum⁓forming organisms. [Etc.] 1972Science 31 Mar. 1461 (heading) Amino acid composition of planktonic foraminifera: a paleobiochemical approach to evolution. 1973Nature 20 July 182/2 The recognition that keratin can survive tens of millions of years..could lead to further discoveries, enabling more palaeobiochemical analyses to be undertaken. |