UHS MDCAT 2017 Paper MDCAT 2017 PAPER ( PART 5 ) 1. DNA segements of different lengths can be separated by a process of: Northern blotting Autoradiography Gel electrophoresis Western blotting 2. What is the first heat stable component used in PCR: Taq-isomerase Taq-polymerase Taq SSBp Taq-helicase 3. Patients of cystic fibrosis (CF) produce thick mucusbecause of faulty: Mucus membrane Trans-membrane carrier Na+ ions Cl- ions 4. Chemicals used for destroying agricultural competitors are known as: Antibiotics Chemotherapeutic agents Disinfectants Pesticides 5. How denitrification does occur in soil Drainage of manure from fields Active uptake of Nitrate ions by plant roots Leaching of nitrate ions Bacterial reduction of NO3- ions to N2 gas 6. Process by which unrelated species evolve to functionally resemble each other is called: Convergent evolution Co-evolution Parallel evolution Divergent evolution 7. W.O.F shows evidences from evolution through molecular biology: Distribution of species Development of bronchial arches in vertebrate embryo Study of vestigial organs Comparision of genes and proteins in different species 8. Large population size, random mating, no mutation and no emigration or immigration are the postulates of: Hardy- Weinberg theorem Mendel’s law of segregation Mendel’s law of independent assortment Theory presented by Schleien and Schwann 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: Incomplete dominance Over dominance relationship Dominance – recessive relationship Co- dominance 10. Base substitution, deletion and insertion are examples of: Euploidy Point mutation Chromosomal aberration Aneuploidy 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