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.
    On writing paragraphs       Creating a new paragraph usually involves a break or change in thought. This allows the reader to more easily digest sepa â¦ rate ideas instead of tackling one long, long, long paragraph.t the beginning or the end. Usually it is the first sentence. But it can be the second sentence especially when the first sentence is a sentence that links to the previous â¦ paragraph.