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.
Body paragraphs come after the introduction and before the conclusion. The body is usually the longest part of an essay, and each body paragraph may begin with a topic sentence. See Examples and Observations below. Also see: 1  Paragraph. 2  Coherence and Cohesion. 3  Composition. 4  Development. 5  Five-Paragraph Essay. 6  Modes of Discourse.