Physical Properties: Nonpolar. Tryptophan, an essential amino acid, is the largest of the amino acids. It is also a derivative of alanine, having an indole substituent on the Î² carbon. The indole functional group absorbs strongly in the near ultraviolet part of the spectrum.ryptophan, an essential amino acid, is the largest of the amino acids. It is also a derivative of alanine, having an indole substituent on the Î² carbon.
Africa is second largest and second most populous continent in the world with a total population of 1.111 billion. African languages belong to one of the four language families: Afroasiatic, Nilo-Saharan, Niger-Congo and Khoisan.Around 2,000 languages are spoken in Africa.frica is second largest and second most populous continent in the world with a total population of 1.111 billion. African languages belong to one of the four language families: Afroasiatic, Nilo-Saharan, Niger-Congo and Khoisan.
A majority of the world's French-speaking population lives in Africa. According to the 2007 report by the Organisation internationale de la Francophonie, an estimated 115 million African people spread across 31 Francophone countries can speak French as either a first or a second language.rench is the second-most widely spoken mother tongue in the European Union. 1/5 of non-Francophone Europeans speak French. As a result of French and Belgian colonialism from the 17th and 18th century onward, French was introduced to new territories in the Americas, Africa and Asia.