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Hydrogen bonding

Diagram showing the hydrogen bonds that form between the four bases in the DNA double helix. These weak forces between the bases keep the two complementary strands of DNA together and ensure that the correct bases are put in the right place during replication of the DNA molecule. A always pairs with T and C always...

Semi-conservative replication images

A collection of images representing semi conservative DNA replication:

Illustration depicting semi-conservative DNA replication 1. Three generations of DNA are shown. After separation of the DNA double helix, two new complementary DNA strands are synthesised (indicated by a new colour)....

Double helix images

A series of images representing double helix images.

  • DNA double helix and sequencing output: molecular model of a DNA double helix showing the individual atoms (apart from hydrogen) as coloured balls. Carbon atoms are in white, oxygen in red, phosporus in purple and nitrogen in blue....

Human karyotype

Images representing human karyotypes: male, female and Down syndrome.  Curriculum links include chromosomes, DNA, inheritance, sex chromosomes, inherited disorders

Credit: Wessex Reg. Genetics Centre, Wellcome Images

This resource is part of the ...

Genome editing

This article looks at genome editing and its potential impact on genetically carried diseases, such as Huntingtons or Sickle Cell Anaemia as well as its critics who question both the infancy of the technology, and the ethical implications which surround the ability to modify human beings. Crucially, critics...

STEM Learning Magazine: Post-16 and FE - Summer 2016

Pioneering technical services are explored in the cover article of the summer issue of STEM Learning Magazine for Post-16 and FE sectors. Other articles describe changes to A levels and GCSEs,  provide advice on conducting A level biology practicals, and look into investigating radiation levels from space. There is...

The Scratch patch - substitution cipher

This project, exploring basic encryption, is a useful introduction to data security as well as iterating through strings to manipulate them. The program create a ‘substitution cipher’, one of the most basic forms of encryption. It also demonstrates that, for more complex chained commands, Scratch becomes rather...

The Scratch patch - error handling

This activity is an introduction to writing programs that can handle errors. It also helps students to understand number bases, by guiding them through the writing of a ‘base converter’ program.

space:uk - Summer 2015, Issue 43

This edition of the magazine from the UK Space Agency includes:

  • The launch of the Earth Observation satellite, Sentinel 2A
  • News about the Rocket (salad) Science experiment
  • Tim Peake's training for his mission to the International Space Station
  • The launch of the International...

space:uk - Spring 2015, Issue 42

This edition of the magazine, from the UK Space Agency includes:

  • The discovery Beagle 2 on Mars
  • The AstroPi code competition
  • The landing of Philae on comet 67P in pictures
  • The UK's new funding for space programmes
  • British built space technology
  • The healthcare...

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