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.
a distinct portion of written or printed matter dealing with a particular idea, usually beginning with an indentation on a new line. 2. a paragraph mark. 3. a note, item, or brief article, as in a newspaper. verb (used with object) 4. to divide into paragraphs.