Basic Science : Tools Techniques QUESTIONS AND ANSWERS :: part4 : 6 to 10
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
6.Separation of DNA fractions having ¹⁵N/ ¹⁵N, ¹⁵N/ ¹⁴N and ¹⁴N/ ¹⁴N was carried out by Meselson and Stahl through |
| Buoyant density centrifugation |
| Density gradient centrifugation |
| Ion exchange chromatography |
| Affinity chromatography |
7.The technique used in the detection of particular protein is |
| Buoyant density centrifugation |
| Density gradient centrifugation |
| Immuno-electrophoresis |
| Both B and C |
8.Pectic substances can be stained by |
| Iodine |
| Cotton blue |
| Light green |
| Methylene blue |
9.Time and location of DNA synthesis can be studied by means of |
| Extracting DNA at regular intervals from different parts |
| Electron microscopy |
| Carbon dating |
| Radioactive DNA precursors |
10.Ultrastructure of a cell organelle can best be studied through |
| Microdissection |
| Electron microscope |
| Phase-contrast microscope |
| Autoradiography |
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