Basic Science : Tools Techniques QUESTIONS AND ANSWERS :: part5 : 21 to 25
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
21.Which is false? |
| Electrophoresis can help separate proteins |
| Image formed by compound microscope is vertical and erect |
| An angstrom is one-hundredth of a micron |
| Unstained living cells can be studied with the help of phase-contrast microscope |
22.DNA synthesis can be measured by estimating incorporation of radio-labelled |
| Uracil |
| Ribose sugar |
| Thymidine |
| Adenine |
23.Intact chloroplasts of green cells can be isolated with the help of |
| Alcohol |
| Acetone |
| Carbon disulphide |
| Sugar solution |
24.Fuelgen reaction involves |
| Reactions of deoxyribose sugar with leucofuchsin |
| Removal of purines by hydrolysis |
| Reaction of free aldehyde groups with Schiff’s reagent |
| Both B and C |
25.Electron microscope is more advantageous than light microscope because it |
| Requires no light |
| Has higher magnification |
| Gives depth focus |
| Uses vacuum |
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