518 Result(s)
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English
Biomedicine general
Chemistry/Food Science, general
Life Sciences, general
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Chapter and Conference Paper
Structurally-bound enzymes
It is likely that, within the intact cell, the freedom of movement of all enzymes is restricted. To that extent they could all be considered structurally-bound. However, from the purely experimental point of v...
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Chapter and Conference Paper
The Mode of Operation of Dehydrogenases with Special Reference to Alcohol Dehydrogenase
The colour change that takes place in solutions of hemoproteins when enzyme-substrate complexes are formed1, 2, 3 or when the prosthetic group combines with the apoprotein4, 5 has caused these enzyme complex form...
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Chapter
Biochemical Genetics
Biochemical genetics makes use of heritable metabolic dissimilarities among individuals of a species in studies of fundamental biochemical problems. Through the application of its methods considerable progress...
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Chapter
Vitamin C in the Animal Cell
Although vitamin C was not isolated until 1928 its importance for the normal functioning of animal cells and tissues had been demonstrated by the occurrence of scurvy for hundreds or even thousands of years be...
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Chapter
Nitrogen metabolism of seedlings
Plant seeds vary widely in size, and in the nature and amount of the reserve materials which they provide for the germinating seedling. The nitrogenous metabolism of seedlings has, for obvious reasons of exper...
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Chapter
Protein metabolism in flowers
The flower is the distinguishing feature of the group of plants which, though a comparative newcomer in the evolutionary process, now dominates the vegetation of most parts of the world. Within this great grou...
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Protein metabolism in ripening and dormant seeds and fruits
It is not necessary to consider here the complex question of the morphological definition of a fruit. The structures ordinarily considered as fruits arise from tissues of very diverse origin. In some plants th...
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Chapter
Protein metabolism of bacteria
Bacteria are much the same as other organisms so far as proteins are concerned — they contain various kinds including enzymes and can synthesise and degrade proteins. They have, however, certain attributes whi...
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Chapter
The biosynthesis of wall material
The problems involved in the biosynthesis of wall materials and their derivatives have long been under consideration, but it is only in comparatively recent times that any marked advance has been made in their...
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Chapter
The polyhydric alcohols. Acyclic polyhydric alcohols
The polyhydric alcohols (polyols) may be divided into two classes, depending on whether or not they possess a ring structure. In this section consideration is given only to the acyclic polyols, which are known...
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Chapter
The aminosugars and chitin
Although the physiology and chemistry of the aminosugars have been extensively studied, especially in the past few years, relatively little attention has been paid to chitin. This perhaps, is not very surprisi...
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Chapter
Ascorbic acid
The connection between the type of diet and incidence of scurvy was early recognized, but it was not before the notion of accessory food factors, or vitamins, had been clearly formulated in 1912 (G. Hopkins, C. F...
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Chapter
The synthesis of amino acids in plants
Amino acids, both in the free form and as constituents of protein, occupy a central position in the metabolism of all organisms, and the pathways of amino acid metabolism, as far as they are known, are for the...
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Chapter
Biological aspects of symbiotic nitrogen fixation
The subject of symbiosis between the root nodule bacteria and leguminous plants, as reflected in the practical significance of nitrogen fixation, has had a broad and comprehensive development. Two authoritativ...
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Enzymatic synthesis (including brief review of formation in photosynthesis), and interconversion of the monosaccharides
The carbohydrates are primarily the product of photosynthetic activity in plants1. In this process the green plants capture electromagnetic energy in the form of sunlight and transform it into stored chemical ene...
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Glycolipids
Glycolipids probably represent the most poorly characterised of all lipid classes, particularly in plants. For a fuller account and list of references see Vol. VII1. It is sometimes uncertain whether the carbohyd...
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Chapter
The special role of individual amino acids in plant metabolism
In addition to their primary role as structural units of protein, the amino acids and their amides serve various other functions: as agents for storage and translocation of nitrogen, as intermediates in biosyn...
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Chapter
The absorption and availability of nitrate and ammonia
This section is concerned with those environmental and plant variables which control the uptake of ammonium salts and nitrates and their utilisation as nitrogen sources. The origin of these salts and their dis...
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Chapter
The enzymes controlling hydrolytic, phosphorolytic and transfer reactions of the oligosaccharides
The oligosaccharidases and the transglycosylases occupy a key position in the biological activities of plants because by their action they provide the cells with the simple sugars entering the various pathways...
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Chapter
The accumulation of carbohydrates by seeds and fruits
Changes in carbohydrate content of fruits during growth and maturation depend to a certain extent upon the type of fruit. There are, for example, those fruits which, during ripening, accumulate a so-called “st...
