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Site of protein synthesis. RNA is transcribed in the nucleus and travels to the ribosomes on the endoplasmic reticulum (which are located in the cell cytoplasm) for translation/protein synthesis.

Immunisation introduces a specific antigen into the body. This is recognised as foreign and stimulates B lymphocytes to produce plasma cells and memory cells. Plasma cells go on to secrete specific antibodie...

Independent Variable - this is the variable which is being changed and manipulated by the scientist in order to test its impact on other variablesDependent Variable - this is the variable which is being meas...

Deoxyribose Sugar 2) Base 3) Phosphate Group

The lock and key mechanism is a metaphor to explain the specificity of the enzymes active site and the substrate. In the same way only certain keys fit a lock, only certain substrates fit an enzyme's active ...