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DNA isolation is important for experimental analysis and drug discovery across many biological disciplines. Firstly a cell culture must be homogenised to break down the cells into a uniform liquid, making...

Student will need to understand that the turning point will be a minimum as the curve is positiveStudent should complete the square:1) factorise out the 2: 2(x² + 7/2 x) - 82) complete the squa...

Both of these tenses are used to refer to actions in the past. The first one, the passé composé, is used to refer to completed actions, things that happened at a specific point in time. The imparfait, or ...

NaCl is an example of a covalent structure, where electrons are shared between the atoms in covalent bonds. Graphite has a giant covalent structure with the covalently bonded carbon atoms arranged in laye...

Je pense que le réchauffement climatique est un vrai problème pour la Terre. Nous devrions essayer de réduire les émissions de dioxide de carbone en utilisant les transports en commun au lieu de dépendre ...