HSSC Senior Scientific Asst. / Dt.-01-01-2023 Evening Shift (Cat. No.-1,2,5,6,7,8,10)Total Questions: 1001. Transmission Electron Microscope (TEM) provides a resolution of-(a) 0.2 nm(b) 10 nm(c) 15 nm(d) 50 nmCorrect Answer: (a) 0.2 nm2. Which of the following cycles shows an amphibolic pathway?(a) Glyoxylate(b) Citric acid cycle(c) Glycolysis(d) Lipid metabolismCorrect Answer: (b) Citric acid cycle3. Which of the following is not an enzyme-catalyzed reaction in metabolism?(a) Isomerization and elimination(b) Internal rearrangement(c) Maillard reaction(d) Free radical reactionCorrect Answer: (c) Maillard reaction4. Name the inhibition where end products of a biosynthetic pathway inhibit the activity of the first enzyme:(a) Feedback inhibition(b) Feedback repression(c) Allosteric inhibition(d) Competitive inhibitionCorrect Answer: (a) Feedback inhibition5. Which of the following enzyme deficiencies leads to hemolytic anemia?(a) Glucokinase(b) Pyruvate kinase(c) Phosphoglucomutase(d) PhosphofructokinaseCorrect Answer: (b) Pyruvate kinase6. Which of the following is a tricarboxylic acid?(a) Acetic acid(b) Succinic acid(c) Oxaloacetic acid(d) Citric acidCorrect Answer: (d) Citric acid7. The epigenetic inheritance system has been described as:(a) Genotype inheritance(b) Soft inheritance(c) RNA inheritance(d) Hard inheritanceCorrect Answer: (b) Soft inheritance8. Which of the following explains genetic disorders such as albinism and alkaptonuria?(a) Recessive inheritance(b) Dominant genes(c) X-chromosomes(d) Y-chromosomesCorrect Answer: (a) Recessive inheritance9. Homozygosity and heterozygosity of an individual can be determined by:(a) Test-cross(b) Self-fertilization(c) Back-cross(d) All of the aboveCorrect Answer: (a) Test-cross10. The smallest unit of genetic material that produces a phenotypic effect on mutation is:(a) gene(b) muton(c) nucleic acid(d) reconCorrect Answer: (b) mutonSubmit Quiz12345678910Next »
