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Vaccination is an important method used in healthcare to prevent people from getting certain diseases. Vaccines contain a dead or weakened (attenuated) form of a pathogen, and the immune system res...
The Polymerase Chain Reaction (PCR) is a method of DNA amplification in vitro. It consists of 3 stages - denaturation, annealing and extending. PCR relies on the use of a thermophilic Taq polymerase en...
Introns and exons are parts of genes - exons code for proteins, whereas introns do not, ie: exons are converted into messenger RNA to allow these parts of the gene to then be transcribed into protein. ...
Oral cavity, Oesophagus, Stomach, duodenum, jejunum, ileum, colon, rectum, anus.
Avtive transport is the transport of molecules against their concentration gradient (that is, from a low concentration to a high concentration). This mechanism requires energy, and so ATP is used up.
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