22 results found for biology

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01:14:00

Cuckoos and their victims

by Nick Davies
Cuckoos and their victims
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 1305 views
Rating:

The sight of a little warbler feeding an enormous cuckoo chick has astonished observers since ancient times. It was once thought that cuckoos were unable to raise their own young because of defective anatomy and behaviour, and so other birds were onl....

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01:10:00

Bacterial cell walls, antibiotics and the origins of life

by Jeff Errington
Bacterial cell walls, antibiotics and the origins of life
for 14-19 and upwards,
Lectures | 14-19 and upwards | 8 years ago | 1247 views
Rating:

The cell wall is a crucial structure found in almost all bacteria. It is the target for our best antibiotics and fragments of the wall trigger powerful innate immune responses against infection. Surprisingly, many bacteria can switch almost effortl....

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01:01:00

Genetic control and the mammalian radiation

by Duncan Odom
Genetic control and the mammalian radiation
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1112 views
Rating:

To grow tissues in our body two key types of DNA control how, where and when to build essential proteins. Recent comparisons of mammal genomes show that instructions coding how to build proteins are similar across diverse species. In contrast the gen....

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01:13:00

Targeting the human kinome: cancer drug discovery

by Nicholas Lydon
Targeting the human kinome: cancer drug discovery
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1122 views
Rating:

This lecture discusses how the discovery of the Philadelphia chromosome provided the first example of a link between cancer and a recurrent genetic abnormality. This chromosomal translocation, which results in activation of the Abl protein kinase, re....

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01:01:00

How embryos build organs to last a lifetime

by Brigid Hogan
How embryos build organs to last a lifetime
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1065 views
Rating:

All the organs of our body originate from small founder populations of cells which multiply into complex structures. ÊAdult stem cells are used to maintain organs throughout adult life and to repair or regenerate them after damage.Ê Focusing on the....

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01:02:00

NeuroNavigation: how the brain represents the space we live in and finds our way around

by John O'Keefe
NeuroNavigation: how the brain represents the space we live in and finds our way around
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 1560 views
Rating:

Learning about new environments or locating ourselves in familiar environments are some of the most fundamental tasks that the brain performs. Information is not stored in response to biological needs such as hunger or thirst but on the basis of cogn....

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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
Rating:

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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01:08:00

Nobel Lives

by Sidney Brenner
Nobel Lives
for 14-19 and upwards,
Discussions | 14-19 and upwards | 11 years ago | 3183 views
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An audience with Nobel prize winners John Sulston FRS and Sydney Brenner FRS, who talk to Sarah Montague of BBC Radio 4's Today Programme, about their lives in science and their visions for the future.

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01:34:00

Is biodiversity going the way of the Dodo?

by Various Presenters
Is biodiversity going the way of the Dodo?
for 14-19 and upwards,
Discussions | 14-19 and upwards | 11 years ago | 1646 views
Rating:

Panel discussion with Professor Jonathan Baillie, Dr William Cheung, Professor Adrian Lister and chaired by Dr Susan Lieberman, as part of the Royal Society Summer Science Exhibition 2011.  Right now one-fifth of the world’s vertebrates are classi....

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01:04:00

Nature’s glass: half-full or half-empty?

by Andrew Balmford
Nature’s glass: half-full or half-empty?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 1515 views
Rating:

Andrew Balmford FRS is Professor of Conservation Science at University of Cambridge.  The world’s governments failed to meet their pledge of reducing the rate of biodiversity loss by 2010. Wild populations, their habitats, and the benefits they pr....

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00:58:00

The Zoological World of Edward Lear

by Clemency Fisher
The Zoological World of Edward Lear
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 1582 views
Rating:

Clemency Fisher is Curator of Vertebrate Zoology at National Museums Liverpool. Edward Lear is most famous for his Nonsense Rhymes, such as “The Owl and the Pussycat” and “The Quangle Wangle’s Hat”, but he was also a talented zoological art....

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01:05:00

Pandemic Influenza: one flu over the cuckoo’s nest

by Robert Webster
Pandemic Influenza: one flu over the cuckoo’s nest
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 970 views
Rating:

Where do the pandemic influenza viruses come from and why did experts fail to predict the severity of the 2009 pandemic? However to date, the 2009 H1N1 pandemic influenza has been much less severe than the 1918 Spanish influenza.

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01:04:00

Cloning, stem cells and regenerative medicine

by Ian Wilmut
Cloning, stem cells and regenerative medicine
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1200 views
Rating:

Extraordinary opportunities to study the molecular mechanisms that cause inherited diseases are being provided by new methods of producing stem cells. Hear about not only the potential value of these new methods, but also how their development was pr....

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01:06:00

Our genomes, our history

by Gilean McVean
Our genomes, our history
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1579 views
Rating:

Genetic differences between humans reflect the fundamental processes, such as mutation, recombination and natural selection, which have influenced our evolutionary history. Now that we can chart the genomes of many individuals, we are finding many su....

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01:17:00

Mammalian biodiversity: past, present, future?

by Andy Purvis
Mammalian biodiversity: past, present, future?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1302 views
Rating:

Beautiful and charismatic, mammals are biodiversity icons. But a quarter of mammalian species are now threatened with extinction, as ecosystems reel under the impact of a growing and ever more demanding human population. This lecture explores the his....

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01:06:00

Three score years and then? The new biology of ageing

by Faragher Richard
Three score years and then? The new biology of ageing
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1159 views
Rating:

Ageing is the single greatest challenge facing our society today. Recent breakthroughs have demonstrated that it is possible to combine a long life with the absence of age-related disease. Scientists at the forefront of this research will explain the....

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01:07:00

Genetic fingerprinting and beyond

by Alec Jeffreys
Genetic fingerprinting and beyond
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1848 views
Rating:

Professor Jeffreys will describe how DNA typing can be used to solve casework and will review the latest developments, including the creation of major national DNA databases that are proving extraordinarily effective in the fight against crime.

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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
Rating:

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

Plasticity of the brain: the key to human development.

by Colin Blakemore
Plasticity of the brain: the key to human development.
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1416 views
Rating:

How do our genes program the complexity of our brains? Why is human culture so much richer than that of the Great Apes? And how has human cognitive achievement continued to accelerate, when our genetic makeup has changed very little over the past 100....

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01:04:00

The origins of flowers

by Peter Crane
The origins of flowers
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1282 views
Rating:

Flowers are such a ubiquitous and familiar part of our modern world that it is easy to take them for granted. But as Darwin recognized, the exquisite details of their structure and appearance have been shaped by evolutionary processes over millions o....

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01:01:00

Is the Great Barrier Reef on Death Row?

by Charlie Veron
Is the Great Barrier Reef on Death Row?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1821 views
Rating:

Professor J.E.N Veron, the former Chief Scientist of the Australian Institute of Marine Science and widely regarded as the world's leading authority on coral reef ecosystems, presents the effects that climate change is having on coral reefs.

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00:33:00

Deep sea discoveries

by Jason Hall-Spencer
Deep sea discoveries
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 3370 views
Rating:

Recent underwater images show that the deep sea realm of the British Isles is nothing like the monotonous expanse of mud that many people imagine. Spectacular coral reefs, once thought to be restricted to the tropics, are now known to occur in the ch....

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