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Genes are the code that makes up all life on Earth. Genes are sections of the long chain-like molecule called DNA, which is found coiled up into chromosomes in the nucleus of cells. The most important par...
The external intercostal muscles contract, pulling the ribs upwards and outwards. At the same time the muscles of the diaphragm contract, pulling the diaphragm down and causing it to flatten. Both of thes...
Trypsin is a protease that acts in the small intestine to digest proteins. The advantage of it being produced inactive form in the pancreas is so that it doesn't digest pancreatic proteins. This means it ...
Plants - harness light energy into chemical energy of ATP (photosynthesis) Eukaryotes- extract high energy electrons from fuels (mostly sugars) to synthesise ATP. This process is called oxidative ...
Food consists of many types of molecules, these are: polysaccharides (a chain of single molecular units); dissacharides (a pair of single molecular units) and monosaccharides (the individual units themsel...
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