Read the texts below quickly
1: It starts with a single cell. The first cell splits to become two and the two become four and so on. After just forty-seven doublings, you have 10,000 trillion (10,000,000,000,000,000) cells in your body and are ready to spring forth as a human being. And every one of those cells knows exactly what to do to preserve and nurture you from the moment of conception to your last breath.
You have no secrets from your cells. They know far more about you than you do. Each one carries a copy of the complete genetic code – the instruction manual for your body – so it knows how to do not only its own job but every other job in the body too. Never in your life will you have to remind a cell to keep an eye on its adenosine triphosphate levels or to find a place for the extra squirt of folic acid that’s just unexpectedly turned up. It will do that for you, and millions more things besides.
2: The first crucial step in the development of the modern scientific world-view was the Copernican revolution. In 1542 the Polish astronomer Nicolas Copernicus (1473-1543) published a book attacking the geocentric model of the universe, which placed the stationary earth at the centre of the universe with the planets and the sun in orbit around it. Geocentric astronomy, also known as Ptolemaic astronomy after the ancient greek astronomer Ptolemy, lay at the heart of the Aristotelian world-view, and had gone largely unchallenged for 1,800 years. But Copernicus suggested an alternative: the sun was the fixed centre of the universe, and the planets, including the earth, were in orbit around the sun (Figure 1).
3:
Pharmacogenetic tests identify variations (or mutations) in a person’s genetic makeup in order to predict their responses to a medicine. The results may indicate whether a patient will respond to a particular medicine, and/or whether they may experience side effects. It may also yield recommendations on dosage. The test could be done directly by analysing a person’s DNA – researchers may look for the presence, absence or change in a particular gene. Or it could be done indirectly by examining molecules that are influenced by DNA, such as RNA and proteins. Pharmacogenetic tests can be performed on blood samples, cheek swabs, or, as with some cancers, on biopsy tissue.
4:
In December, philosopher and artificial intelligence expert Aaron Sloman announced his intention to create nothing less than a robot mathematician. He reckons he has identified a key component of how humans develop mathematical talent. If he’s right, it should be possible to program a machine to be as good as us at mathematics, and possibly better.
Sloman’s creature is not meant to be a mathematical genius capable of advancing the frontiers of mathematical knowledge: his primary aim, outlined in the journal Artifical Intelligence (vol 172, p2015), is to use such a machine to improve our understanding of where our mathematical ability comes from. Nevertheless, it is possible that such a robot could take us beyond what mathematicians have achieved so far. Forget robot vacuum cleaners and android waitresses; we’re talking about a machine that could spawn a race of cyber-nerds capable of creating entirely new forms of mathematics.
5:
The recent uptake of mobile phones has been accompanied by some concern about possible health risks.1 In the general population, the health effects most often attributed to mobile phone use are non-specific symptoms. Excluding sensations of mild warmth, the most commonly reported symptoms are headache, burning, dizziness, fatigue, and tingling.2 Mechanisms to explain these phenomena remain speculative, and although the pulsing nature of “global system for mobile communication” (GSM) signals has been suggested to be partly to blame,3 experiments that have exposed healthy adults to GSM signals under blind conditions have not found any significant effects on the reporting of symptoms.4
Task
- What kind of text do you think they are from? (an academic book, an academic journal paper, a scientific website, a popular science book, a newspaper /magazine article
- How would you describe the language in each extract?
- Consider examples of academic or informal language use or style. We will discuss your ideas in class, but feel free to post any comments too!