Acetyl group known as paracetamol), and acetylsalicylic acid (better known as aspirin). The introduction of an acetyl group into a molecule is called acetylation. In biological organisms, acetyl groups are commonly transferred from acetyl-CoA to other organic molecules. Acetyl-CoA is an intermediate both in the biological synthesis and in the breakdown of many organic molecules. Acetyl-CoA is also created during the second stage of cellular respiration, the Krebs Cycle, by the action of pyruvate dehydrogenase on pyruvic acid. Histones and other proteins are often modified by acetylation. For example, on the DNA level, histone acetylation by acetyltransferases (HATs) causes an expansion of
Cupboard love love. The term ""cupboard-lover"" refers to someone who will only profess their love, or act endearingly for the sake of gain from another person. Cupboard love Cupboard love is a popular learning theory of the 1950s and 1960s based on the research of Sigmund Freud, Anna Freud, Melanie Klein and Mary Ainsworth. Rooted in psychoanalysis, the theory speculates that attachment develops in the early stages of infancy. This process involves the mother satisfying her infant's instinctual needs, exclusively. Cupboard love theorists conclude that during infancy, our primary drive is food which leads to a secondary drive for attachment. Sigmund Freud,