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In the 50's scientists didn't agree about which molecule - proteins or DNA - carry the hereditary genetic information. This experiment was designed to answer this question. It was known that bacteriophage...
At each point along the capillary bed, fluid movement is governed by 2 forcesHydrostatic pressureWater potentialAt the arteriole endBlood is under pressure -> high hydrostatic pressure forces fluid (pl...
This is because the altered amino acid codes for a different protein (an enzyme is a protein) to be created. This protein has a different 3D structure and shape meaning that it's active site, where the su...
The small intestine's structure is adapted in two main ways to aid in the absorption of the products of digestion. Firstly, the small intestine's surface is covered in villi which help to increase the sur...
A stem cell is an unspecialised cell that can undergo differentiation to form a specialised cell. Differentiation describes changes that happen to a cell that result in it transforming into a different ce...
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