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11. Which of the following is false about freeze-fracture technique? A. It involves physical breaking of frozen biological samples B. Fixation in glutaraldehyde C. Involves vacuum sublimation of ice D. […]

10. The kind of microscope in which image is formed by passing an electron beam through a specimen and focusing the scattered electrons is (A) Transmission electron microscope (B) Scanning […]

9. An image is formed from diffraction pattern by the process of (A) Image transformation (B) Data transformation (C) Fourier transformation A. Image transformation: Incorrect. Generic term; doesn’t specify mathematical […]

8. Which of monochromatic light would you choose for the best resolution of light microscope. (A) Violet (B) Red (C) Blue (D) Green Correct Answer: A. Violet Violet light provides […]

7. During microscopy, if the diameter of an object is decreased then its resolving power will be: A. Increase in proportion to increase in radius B. Decrease in proportion to […]

6. Location of a specific protein is predicted in vivo accurately by which of the following techniques? A. Scanning electron microscopy B. Indirect immuno-fluorescence microscopy using monoclonal antibody against the […]

5. The most important property of any microscope is its power of resolution, which is numerically equivalent to D, the minimum distance between two distinguishable objects. D depends on three […]

4. A microscope can distinguish two closely situated points and the distance between those points is known as the ______ of the microscope. A. Magnification B. Illumination C. Resolving power […]

3. What would be the actual size of an object that appears as 2 µm when it is magnified 1000 times? A. 2 nm B. 20 nm C. 2 mm D. 20 µm  Correct […]

2. Function of scanning electron microscopy (SEM) is: A. To create a sense of depth B. To examine internal cellular structure C. To observe living specimens D. Both A and […]