They contain carbon, hydrogen, oxygen and nitrogen and usually sulfur, occasionally phosphorus. Proteins form a large and essential part of the body mass, comprising especially cell membranes, connective tissue, muscles, enzymes, hormones, blood proteins. To maintain this mass the diet must contain a high proportion of protein, especially in growing animals and those recovering from debilitating diseases.
Russian composer Sergei Prokofiev wrote Peter and the Wolf in 1936 after returning to Moscow following a 19-year, self-imposed exile. It is a children's musical story that teaches about the orchestra by introducing various characters portrayed by seven themes played on either solo instruments or groups of instruments.
Peter Rabbit. Peter is one of Beatrix Potterâs best known characters and children the world over are familiar with this classic tale of naughty Peterâs escape from Mr. McGregorâs garden. Published in 1902, The Tale of Peter Rabbit is Beatrix Potterâs first book and was expanded from an illustrated letter she had sent to a young friend who was ill.