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.
Introductory paragraph. The Introductory paragraph introduces the paper's thesis to the reader. This type of paragraph is used not only to present the topic and organization of the paper but also to grab the reader's attention. When writing the introduction, it is probably best to use the funnel or general-to-specific method.