UHS MDCAT 2017 Paper MDCAT 2017 PAPER ( PART 5 ) 1. DNA segements of different lengths can be separated by a process of: Western blotting Gel electrophoresis Northern blotting Autoradiography 2. What is the first heat stable component used in PCR: Taq-isomerase Taq-helicase Taq SSBp Taq-polymerase 3. Patients of cystic fibrosis (CF) produce thick mucusbecause of faulty: Trans-membrane carrier Cl- ions Mucus membrane Na+ ions 4. Chemicals used for destroying agricultural competitors are known as: Chemotherapeutic agents Antibiotics Pesticides Disinfectants 5. How denitrification does occur in soil Drainage of manure from fields Active uptake of Nitrate ions by plant roots Bacterial reduction of NO3- ions to N2 gas Leaching of nitrate ions 6. Process by which unrelated species evolve to functionally resemble each other is called: Co-evolution Parallel evolution Divergent evolution Convergent evolution 7. W.O.F shows evidences from evolution through molecular biology: Distribution of species Comparision of genes and proteins in different species Development of bronchial arches in vertebrate embryo Study of vestigial organs 8. Large population size, random mating, no mutation and no emigration or immigration are the postulates of: Theory presented by Schleien and Schwann Mendel’s law of independent assortment Mendel’s law of segregation Hardy- Weinberg theorem 9. Pure breeding lines of pea were taken regarding seed shape- Round and wrinkled and were crossed with no intermediate between parents. All offsprings were found to be round. These results show: Over dominance relationship Incomplete dominance Dominance – recessive relationship Co- dominance 10. Base substitution, deletion and insertion are examples of: Euploidy Aneuploidy Chromosomal aberration Point mutation Loading … Pages: 1 2 3 4 5 6 7 8 9 10 11
assalamualaikum sir this website is amaizng….for MDCAT students Butt there is an issue with key kindly recheck it as in part 7 mcq no 8 is marked wrong ………….protien molecules mostly made os 20 types of amino acids rather than 25