its a holi holi-day. have a great time everyone. Hope it dosn’t rain too much if you’re going sailing!

You should be able to answer the following questions on antibiotics:

1. What was the first antibiotic?
2. Who discovered it?
3. how was it discovered?
4. When and where was it discovered?
5. Why was the discovery so important?
6. What diseases can antibiotics be used to treat?
7. What can’t they be used to treat?
8. Why should they not be over prescribed?
9. What does this picture show?

I’ve done 2 famous scientists this week because year 10 are studying antibiotics.

Scotsman Alexander Fleming discovered penicillin, the first antibiotic in 1928 in London. This is what many people regard as the greatest discovery of the twentieth century (no it’s not the mobile phone!) – even though it was by accident!

Read about him here.

Edison never questioned whether something might be done, only how.

Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and businessman who developed many devices which greatly influenced life around the world, including the phonograph and a long lasting light bulb. Edison’s career, the fulfillment of the American dream of rags-to-riches through hard work and intelligence, made him a folk hero to his countrymen.

Before he died, in 1931, he had played a critical role in introducing the modern age of electricity. From his laboratories and workshops emanated the phonograph, the carbon-button transmitter for the telephone speaker and microphone, the incandescent lamp, a revolutionary generator of unprecedented efficiency, the first commercial electric light and power system, an experimental electric railroad, and key elements of motion-picture apparatus, as well as a host of other inventions. Read the rest of this entry »

Today we looked at what happens to our digested food in the small intestine. We looked at a very yukky video!

Food is absorbed into the blood through the walls of the small intestine. Once in the blood the food can then travel to where it is needed for respiration, which releases the energy from the food.

The small intestine is specially adapted by having millions of thin folds called villi on its inner surface. These folds greatly increase the surface area, and so speed up the absorption of the small digested food molecules into the blood.

villi

lesson notes and activities - you must have a labelled villus and a completed crossword stuck in your book.

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