207 results found for biology

View Grid List
Sort A-Z By date
Krebs.png 00:03:00

The Krebs Cycle

by Matt Johnson
The Krebs Cycle
for 11-14 and upwards,
Lectures | 11-14 and upwards | 1 year ago | 0 views
Rating:

Matt Johnson explains the Krebs Cycle, its discovery by a University of Sheffield Nobel Prize winner and its role in endurance sports such as cycling.

More details | Watch now
Is there life 00:03:00

Is there life in your PC?

by Norman Billingham
Is there life in your PC?
for 14-19 and upwards,
Discussions | 14-19 and upwards | 2 years ago | 433 views
Rating:

What is there in your computer which is attractive to bacteria and fungi?

More details | Watch now
telomeres 00:35:00

Telomeres: Telling Tails

by Elizabeth Blackburn
Telomeres: Telling Tails
for 18-22 and upwards,
Lectures | 18-22 and upwards | 2 years ago | 519 views
Rating:

Telomeres protect chromosome ends and help stabilize the genome. Throughout human life and in aging, telomeres often erode down, eventually causing cells to malfunction or die. The highly regulated cellular enzyme telomerase adds telomeric DNA to tel....

More details | Watch now
the killer defence 00:29:00

The Killer Defence

by Peter Doherty
The Killer Defence
for 18-22 and upwards,
Lectures | 18-22 and upwards | 2 years ago | 395 views
Rating:

Immune surveillance by virus-specific CD8+ cytotoxic T lymphocytes (CTLs), or killer T cells, has long been known to be central to the control of acute infections and some cancers, though the role of CTL memory in the rapid recall of immune protectio....

More details | Watch now
minimising a bacterial 00:31:00

Minimizing a Bacterial Genome by Global Design and Synthesis

by Hamilton Smith
Minimizing a Bacterial Genome by Global Design and Synthesis
for 18-22 and upwards,
Lectures | 18-22 and upwards | 2 years ago | 512 views
Rating:

In 2010, we chemically synthesized the 1078 Kb Mycoplasma mycoides genome and transplanted it into a recipient cell cytoplasm to create a 'synthetic cell', JCVI-syn1.0 (Science, 329, 52-56, 2010). We identified several hundred non-essential genes by ....

More details | Watch now
Role of nitric 00:39:00

Role of Nitric Oxide and Cyclic GMP in Cell Signaling and Drug Development

by Ferid Murad
Role of Nitric Oxide and Cyclic GMP in Cell Signaling and Drug Development
for 18-22 and upwards,
Lectures | 18-22 and upwards | 2 years ago | 459 views
Rating:

Nitric oxide research has grown rapidly with about 150,000 research publications describing its biological effects. It is an important messenger molecule that affects most tissues and biological processes. Many effects of nitric oxide are mediated by....

More details | Watch now
Ion channels 00:30:00

Ion Channels: Their Discovery, their Function and their Role in Diseases

by Erwin Neher
Ion Channels: Their Discovery, their Function and their Role in Diseases
for 18-22 and upwards,
Lectures | 18-22 and upwards | 2 years ago | 425 views
Rating:

The concept of bioelectricity emerged in the late 18th century, based on the experiments of Galvani and Volta. Sixty years ago, Hodgkin and Huxley showed that the nerve impulse is a result of permeability changes of the nerve membrane. This raised th....

More details | Watch now
the origins of cellular 00:31:00

The Origins of Cellular Life

by Jack Szostak
The Origins of Cellular Life
for 18-22 and upwards,
Lectures | 18-22 and upwards | 2 years ago | 481 views
Rating:

The complexity of modern biological life has long made it difficult to understand how life could emerge spontaneously from the chemistry of the early earth. We are attempting to synthesize simple artificial cells in order to discover plausible pathwa....

More details | Watch now
the origin of reversible 00:30:00

The Origin of Reversible Protein Phosphorylation as a Regulatory Mechanism

by Edmond Fischer
The Origin of Reversible Protein Phosphorylation as a Regulatory Mechanism
for 18-22 and upwards,
Lectures | 18-22 and upwards | 2 years ago | 469 views
Rating:

Reversible protein phosphorylation can be considered one of the most prevalent mechanism by which eukaryotic cellular events are regulated. It is directly involved in numerous pathological conditions, and bacterial and viral diseases. This process wa....

More details | Watch now
a crime 00:27:00

A Crime against Humanity

by Richard Roberts
A Crime against Humanity
for 18-22 and upwards,
Lectures | 18-22 and upwards | 2 years ago | 607 views
Rating:

When Monsanto first tried to introduce GMO seeds into Europe there was a backlash by the Green parties and their political allies, who feared that American agro-business was about to take over their food supply. Thus began a massive campaign not agai....

More details | Watch now
Finding mutations 00:31:00

Finding Mutations that Affect Immunity

by Bruce Beutler
Finding Mutations that Affect Immunity
for 18-22 and upwards,
Lectures | 18-22 and upwards | 2 years ago | 532 views
Rating:

Beginning with an exception to normal function caused by a genetic aberration, one may hope to find at least one protein with non-redundant function in a certain biological process. This approach permitted the identification of the receptor for bacte....

More details | Watch now
Insight into the laws 00:34:00

Insight into the Laws of Nature for Biological Evolution

by Werner Arber
Insight into the Laws of Nature for Biological Evolution
for 18-22 and upwards,
Lectures | 18-22 and upwards | 2 years ago | 493 views
Rating:

Both evolutionary biology and genetics have their roots 150 years ago in work with phenotypic variants of plants and animals. In contrast, microbial genetics originating as recently as the 1940s, rapidly revealed that filamentous DNA molecules are th....

More details | Watch now

Items per page: