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Enzymes are the workhorses of the cell and are very specific in their actions. This programme explores in detail the action of PFK, phospho fructose kinase, and explains specificity and catalysis. Uses...
When trying to understand and interpret the structure and functions of living cells and their organelles, an idea of scale is vital. This programme puts the size of cellular structures into perspective and...
Two studies examine factors that regulate plant growth. Phototropism is the growth of a plant stem towards the light. The validity of the Cholodney-Went theory of phototropism is considered in the light of...
Considers the mechanisms that allow cells to differentiate and interact during development to produce the shape of the adult organism. Morphogenesis, the generation of shape and form, is illustrated by...
All ropes require certain basic properties such as suitable tensile strength and resistance to wear and corrosion, whatever their final application to enable them to perform predictably in a particular...
Shows how materials engineers use phase diagrams to form a base on which to design the composition of alloys, because the way in which alloys are heat treated during processing influences the way they...
Describes the design, manufacture and marketing of light bulbs. Two components, the tungsten filament in the household bulb and the alumina tube in the high-pressure sodium vapour lamp, are used as examples...
Looks at the developments that have taken place in British agriculture over the last 50 years. Although yields have doubled, this is not without other inputs into the system, especially fertilisers and...
In the late 1960s the Kenyan government decided to explore the possibilities of sugar production in an area of north-west Kenya, near the town of Mumias. Looks at the historical background to the scheme, and...
Looks at some new developments in the food industry starting with single cell proteins from mineral oil and leaf protein from lucerne. Compares the economics of producing these materials for animal feed with...
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