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.
The PhD degree - a simple definition. The term 'PhD' stands for 'Doctor of Philosophy'. In most cases, a PhD: Is an advanced postgraduate degree involving three or more years of independent research on an original topic. Is carried out with the support of one or more expert academic supervisors. Results in a thesis that offers a significant original contribution to knowledge.