7 results found for biology

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00:47:00

From bench to bedside: KATP channels and neonatal diabetes

by Frances Ashcroft
From bench to bedside: KATP channels and neonatal diabetes
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 1482 views
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Whether you eat a whole box of chocolates or fast for the day, the pancreatic beta-cells ensure that your blood glucose level remains relatively constant by regulating the release of insulin from the pancreatic beta-cells. Diabetes results when insul....

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01:04:00

Molecular chaperones: how cells stop proteins from misbehaving

by R. John Ellis
Molecular chaperones: how cells stop proteins from misbehaving
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 2567 views
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Proteins are the action molecules of all cells, and to function properly, protein chains must fold and assemble correctly. But each chain of every protein runs the risk that it will combine with one or more identical chains to form nonfunctional aggr....

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01:00:00

The great ideas of biology

by Paul Nurse
The great ideas of biology
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1560 views
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Three of the ideas of biology are the gene theory, the theory of evolution by natural selection and the proposal that the cell is the fundamental unit of all life. A fourth idea is that the organization of chemistry within the cell provides explanati....

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01:00:00

The new biology of ageing

by Linda Partridge
The new biology of ageing
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1328 views
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Research into ageing has been rejuvenated by the discovery of mutations in single genes that extend the lifespan of laboratory animals. Some of the signalling pathways involved, particularly the insulin/Igf-like pathway, have effects on lifespan acro....

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01:16:00

A molecular window into speech and language

by Simon Fisher
A molecular window into speech and language
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1852 views
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Our capacity for complex speech and language remains one of the most intriguing aspects of being human. It has long been suspected that some answers to this enigma will be found buried within the genome. With recent advances in genetic technologies, ....

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01:08:00

Plant and animal communication

by John Pickett
Plant and animal communication
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1396 views
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Organisms of all kinds use signals comprising minute amounts of natural chemicals. The exploitation of semiochemicals is demonstrated with dramatic success in the management of pests and parasitic weeds in resource-poor East African cereal farming.

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01:08:00

From proteins to drugs

by Mark Pepys
From proteins to drugs
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1383 views
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The normal proteins which circulate in human blood are either known or presumed to have beneficial functions. However normal immunity and inflammation proteins can cause or exacerbate disease in addition to helping to resist infections.

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