MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Cell Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Shadow casting is a technique of visualizing ___________________ |
| A. | isolated particles |
| B. | mounts |
| C. | shoot tips |
| D. | root tips |
| Answer» B. mounts | |
| 2. |
In TEM, the tissue is stained by floating on drops of ______________________ |
| A. | hydrocarbons |
| B. | slow-molecular weight stains |
| C. | heavy metal soutions |
| D. | oil immersion |
| Answer» D. oil immersion | |
| 3. |
Osmium is a ___________________ |
| A. | non metal |
| B. | heavy metal |
| C. | alloy |
| D. | light metal |
| Answer» C. alloy | |
| 4. |
Glutaraldehyde is a ________________ |
| A. | metal |
| B. | fixative |
| C. | non-metal |
| D. | atomic species |
| Answer» C. non-metal | |
| 5. |
The biological materials have little intrinsic capability to ____________________ |
| A. | scatter electrons |
| B. | stain |
| C. | remain viable |
| D. | be captured |
| Answer» B. stain | |
| 6. |
Image formation in electron microscope is based on ___________________________ |
| A. | column length |
| B. | electron number |
| C. | differential scattering |
| D. | specimen size |
| Answer» D. specimen size | |
| 7. |
Which of the following component of TEM focuses the beam of electrons on the sample? |
| A. | ocular lens |
| B. | condenser lens |
| C. | stage |
| D. | column |
| Answer» C. stage | |
| 8. |
During TEM, a vacuum is created inside the _________________________ |
| A. | room of operation |
| B. | specimen |
| C. | column |
| D. | ocular system |
| Answer» D. ocular system | |
| 9. |
The resolution attainable with standard TEM is less than the theoretical value. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
The cathode of transmission electron microscope consists of a ____________________ |
| A. | tungsten wire |
| B. | bulb |
| C. | iron filament |
| D. | gold wire |
| Answer» B. bulb | |
| 11. |
The resolving power of TEM is derived from _______________ |
| A. | electrons |
| B. | specimens |
| C. | power |
| D. | ocular system |
| Answer» B. specimens | |
| 12. |
TEM and SEM are the same microscopy techniques. |
| A. | True |
| B. | False |
| Answer» C. | |