Your cells contain two types of nucleic acids, ribonucleic acid and deoxyribonucleic acid, or RNA and DNA, respectively. They differ from the other macronutrients in that they are not a source of calories in your diet, and their role is strictly to direct the synthesis of new protein molecules.
Definition of postgraduate for English Language Learners. : a student who continues to study for an advanced degree after earning a bachelor's degree or other first degree : a graduate student.
A Doctor of Philosophy of the University of Oxford in full academic dress. A Doctor of Philosophy degree (often abbreviated Ph.D. , PhD, D.Phil. , or DPhil) or a Doctorate of Philosophy, from the Latin Doctor Philosophiae, is a type of doctorate awarded by universities in many countries.etailed requirements for the award of a Ph.D. degree vary throughout the world and even from school to school. It is usually required for the student to hold an Honours degree or a Master's Degree with high academic standing, in order to be considered for a Ph.D. program.