This is Key Stage 4 Biology ~ GCSE.
Welcome to my new look Gondar Design Biology website. This is just one of five sections at Gondar Design Science. I have now transferred all the old HTML pages to this WordPress content managed system. Here you can post comments or ask questions on almost every page. Please register first.
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Use the links on the right of any page to navigate the separate sections of the site.
The photograph at the top of each page in the Biology section of my site was taken here at Mitchell’s Elm House. What a lot of biology is going on here! Think about all the tiny worms, insects and other creepie crawlies in these leaves, not to mention the photosynthesis in the trees above.
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Gondar Design Science
excellent site
explain why are sugars stored as starch and not as simple sugar?
Hi Nazneen,
Firstly, starch is not soluble, so it cannot get out of the cell: glucose is soluble so it would leak out of the cell. Storing glucose in a cell would be like trying to fill a bag made of netting with water.
Secondly one molecule of starch has the same osmotic effect as one molecule of glucose, but many thousands of glucose molecules are joined together to make a molecule of starch. So a cell full of glucose (many thousands of molecules) would swell up by osmosis and burst, but a few starch molecules will not do this. i.e joining all the glucose molecules together takes the osmotic effect away.
when i’m going to write in my blog, i come here and read your articles so i get inspired to write very well.