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The RavensSaturday, 18th April 2015 23:05 - BBC World Service RadioA social work student brefriends a sex worker in Sydney - but how easy is changing a life? The second of two... Read more: The Ravens: 24th International Radio Playwriting Competition winner
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A History of Ideas - Descartes Cogito Ergo SumAvailable until Thursday, 14th April 2016 08:30Stephen Fry explains Rene Descartes argument 'Cogito Ergo Sum' - 'I think, therefore I am'. Watch now: OU on the BBC: A History of Ideas - Descartes Cogito Ergo Sum
A History of Ideas - Erving Goffman's Performed SelfAvailable until Thursday, 14th April 2016 08:15
Thinking Allowed: The Ethnography Award 'Shortlist' 2015Available until Friday, 15th April 2016 09:45
A History of Ideas - John Locke and personal memoryAvailable until Thursday, 14th April 2016 11:15
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Introduction to bookkeeping and accountingThis free course Introduction to bookkeeping and accounting provides an introduction to the... Try: Introduction to bookkeeping and accounting now
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Structural materials in cells
Where does the structure of our body come from? This unit looks at the structure of...
Where does the structure of our body come from? This unit looks at the structure of cells and how proteins are used by both animals and plants to create a framework for cellular growth. You will also learn how a material as fine as spider silk can exceed the strength of steel.
After you have completed this unit you should be able to:
- describe and give examples of how self-assembly enables construction ‘from the bottom up’ in natural materials;
- explain what is meant by primary and higher-order structure in proteins and give examples;
- give examples of the range of functions carried out by proteins within cells;
- describe how a combination of strong and weak bonding within biopolymers and lipids is used to build hierarchical structures with common structural elements and finely tuned properties, including calculations where appropriate;
- explain how both positive and negative design principles must be applied to the design of molecular devices and comment on the challenges involved in attempting such design.
Structural materials in cells
This unit examines how self-assembled structures based on lipids and proteins provide a framework for cellular processes.
This unit is an adapted extract from the Open University course