Phenylalanine, tyrosine, tryptophan. Aliphatic amino acids: These are ones which have aliphatic groups like -CH2- in between carboxylic and amine moiety. They are the ones excluding aromatic amino acids from the above list of both essential and non-essential ones.
What is a paragraph? A paragraph is a collection of related sentences dealing with a single topic. Learning to write good paragraphs will help you as a writer stay on track during your drafting and revision stages. Good paragraphing also greatly assists your readers in following a piece of writing.
Academic Writing. In academic writing, paragraphs will usually consist of the âstandardâ 100 â 200 words (Burns, 2002). You will begin the paragraph with an idea and then explain it in the light of currently accepted knowledge (Phillips, 2014) with references.