58 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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01:09:00

Green Fluorescent Protein: Lighting up Life

by Martin Chalfie
Green Fluorescent Protein: Lighting up Life
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1470 views
Rating:

The accidental discovery of this wonderful tool has changed the face of biology.

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01:12:00

A Worm’s Tale: Secrets of Inheritance and Immortality

by Craig Mello
A Worm’s Tale: Secrets of Inheritance and Immortality
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1783 views
Rating:

Intracellular synthesis is immensely fast and complex.

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01:16:00

The End of Disease

by Roger Kornberg
The End of Disease
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1647 views
Rating:

The importance of transcription in cells and its effect on disease.

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00:57:00

Understanding the Cell cycle

by Paul Nurse
Understanding the Cell cycle
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1435 views
Rating:

How genes act to control the functioning of cells.

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00:09:00

The biology of Striga

by Various
The biology of Striga
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 1838 views
Rating:

One of the major parasites is striga, a weed that sucks the juice and nutrients from cereal crops such as millet, sorghum and maize and causes great yield losses. A single striga plant can produce hundreds of thousands of seeds. The seeds are so tiny....

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00:12:00

‘Witch Weed’ – breaking the spell

by Various
‘Witch Weed’ – breaking the spell
for 14-19 and upwards,
Lectures | 14-19 and upwards | 9 years ago | 2779 views
Rating:

Striga (witchweed) is a parasitic weed that seriously constrains the productivity of staples such as maize, sorghum, millet and upland rice on some farms in Uganda.  Kilimo Trust supported this initiative to try and control its spread.

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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 | 1064 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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01:01:00

Genetic fingerprinting: past, present and future

by Alec Jeffreys
Genetic fingerprinting: past, present and future
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 8139 views
Rating:

Alec Jeffreys presents the origins of DNA fingerprinting through to the latest developments and their social impact

 

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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 | 1581 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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00:15:00

Medicine and the evolution of altruism

by James Marshall
Medicine and the evolution of altruism
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 5277 views
Rating:

Why altruism is necessary for survival

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00:02:00

Nerve tissue engineering

by John Haycock
Nerve tissue engineering
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 3121 views
Rating:

Research staff explain how they are developing nerve guidance channels for repairing peripheral nerve injury

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00:05:00

Fibroblasts and Oesophageal Cancer

by Sam Beckett
Fibroblasts and Oesophageal Cancer
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 5026 views
Rating:

Does the anatomical source of fibroblasts affect their behaviour within a 3D composite model of oesophageal adenocarcinoma invasion?

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00:25:00

Lighting up cells

by Guiseppe Battaglia
Lighting up cells
for 14-19 and upwards,
Lectures | 14-19 and upwards | 11 years ago | 1435 views
Rating:

A presentation about fluorescing cells by a Senior Lecturer in Bionanotechnology in the Department of Biomedical Science at the University of Sheffield

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00:06:00

The cuckoo egg mystery

by Tim Birkhead
The cuckoo egg mystery
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1607 views
Rating:

Research discover new reason for cuckoo success

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00:13:00

Green roofs

by Christine Thuring
Green roofs
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1450 views
Rating:

Using roof gardens to improve environment

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00:16:00

Everything we touch is dirty!

by Ana Lorena Morales Garcia
Everything we touch is dirty!
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1712 views
Rating:

Is food safe to eat if dropped on the floor for less than 5 seconds?

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00:10:00

Effects of high fat diet on bone quality etc.

by Jenna Stevens-Smith
Effects of high fat diet on bone quality etc.
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1208 views
Rating:

How a high fat diet can have a detrimental effect on our bones

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