谷歌涂鸦纪念印度裔美国科学家

DNA - n. a substance that carries genetic information in the cells of plants and animals (DNA is an abbreviation of "deoxyribonucleic acid")

scholarship - n. an amount of money that is given by a school, an organization, etc., to a student to help pay for the student's education

degree - n. an official document and title that is given to someone who has successfully completed a series of classes at a college or university

amino acid - n. any one of many acids that occur naturally in living things and that include some which form proteins

essential - adj. extremely important and necessary

synthetic - adj. made by combining different substances : not natural

host - n. a person who talks to guests on a television or radio show

foul - adj. very unpleasant to taste or smell