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Phototropins are enzymes found in the plasma membrane of particular cells. They are phosphorylated when hit by blue light. 2) This phosphorylation triggers the movement of auxin across the plant shoot by act...

Mitosis consists of four basic phases. 1. Prophase 2. Metaphase 3. Anaphase 4. Telophase It is a common mistake to believe that interphase is part of mitosis. In fact, interphase is just a preparation stage ...

PRIMARY PROTEIN STRUCTURE This is the sequence of amino acids in a polypeptide chain. These are bonded together by strong covalent bonds . SECONDARY PROTEIN STRUCTURE The secondary structure is the shape tha...

Lipids are a great energy reserve in both plants and animals . This is due to the greater number of carbon-hydrogen bonds present in comparison to carbohydrates. It also acts as an insulator against heat los...

Allergy is the result of the immune system overreacting to harmless stimuli in the environment. Examples of stimuli or 'allergens' include pollen, dust, eggs and milk. The body recognises these harmless alle...