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.
1. Decide what the main topic of the paragraph is going to be. Before you begin writing your paragraph, you must have a clear idea of what the paragraph is going to be about. This is because a paragraph is essentially a collection of sentences that all relate to one central topic.