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Chemical reaction biscuits

This Catalyst article looks at the process of baking biscuits. All cooking involves chemical reactions but you are not normally aware of them happening. There is an obvious thermal decomposition reaction which takes place in the middle of this recipe – and you get fabulous ginger biscuits at the end.


Dust to dust? The importance of soil

This Catalyst article looks at soil composition and the reasons behind protecting soil from turning into dust. The UN Year of Soils highlighted the many ways in which humans rely on soil for much more than growing crops.

This article is from Catalyst: Secondary Science Review 2016, Volume 26, Issue 4.


Dimitri Mendeleev and the periodic pattern

Mendeleev's invention of the periodic table of the elements showed how to predict and create further elements, something which scientists are still doing today.

This article is from Catalyst: Secondary Science Review 2016, Volume 26, Issue 4.


Fingerprints – beyond identity

Chemists analyse the tiny traces of substances which form a fingerprint. This allows them to determine drug abuse and as well as the age, gender and diet of an individual.

This article is from Catalyst: Secondary Science Review 2016, Volume 26, Issue 3.


Bioethics briefing no 2: crop plant genetic modification

This issue covers the background in selective plant breeding over the centuries and then describes the more recent advances and the introduction of genetically modified crops. The intrinsic objections, safety concerns (such as containment and good safety), sociopolitical concerns and other wider global issues...

Bioethics briefing no 3: preimplantation genetic diagnosis

This edition covers issues concerning assisted conception and "designer babies", which is a term which is often heard in the popular media. Today an ever-growing number of children are born after PGD and the different motivations for wanting it vary quite widely, ranging from the prevention of genetic...

Bioethics briefing no 4: xenotransplantation

As human-to-human transplantation has become more and more successful, it has almost become a victim of its own success. There is a shortage of donor organs, and even with more government initiatives to change the organ donor register system, there will still be a shortfall. Would animal cells, organs and...

Bioethics briefing no 5: stem cells

Stem cells have the potential to develop into different cell types in the human body and as such, can be used for tissue repair or, perhaps in the distant future, for the creation of spare body parts perhaps. This briefing provides background on stem cell, the two different types of stem cells (adult and...

Bioethics briefing no 1: ethics and bioethics in education

This briefing discusses how bioethics issues affect us all and how we hear about issues which fall into this category on a daily basis. News items about cloned embryos, GM crops, fears about the use of stem cells for research and even issues about having the right to chose to die are all subjects which people...

Is the UK being too hasty over three-parent babies?

The rush to permit controversial methods to avoid mitochondrial disease in babies raises questions, say two bioethicists.

This resource is part of the Post 16 genetics and genomics collection of resources.


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