Assalam o alaikum Today my paper is bio201 at 7:30 a.m Long questions 1.Describe; Primary cell culture Cell line Pure culture 2. Five major promoting oncogenes 3. Polymerase chain reaction 4. How DNA is packed inside the cell. Short questions 1. Steps of mitosis 2. Function of TH1 and TH2 3. Function of ERGICf3 4. Types of MHC molecule.