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FRET microscopy can be used for:
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- B. Write the function/s of each part of the microscope listed below. a. Eyepiece b. Draw tube c. Hemispheric prism housing d. Dust shield e. Revolving Nose Piece f. Objectives: Scanner LPO HPO ΟΙΟ g. Arm h. Coarse Adjustment knob i. Fine adjustment knob j. Slide holder & clip k. Rear knob I. Front knob m. Central aperture n. Condenser o. Iris diaphragm p. Mechanical Stage q. Mirror r. Mirror rack s. Stage adjustment knob t. Base1. How will the following affect resolution during microscopy?i. Closing or opening the diaphragmii. Raising or lowering the condenserii. Increasing or reducing the light intensity 2. During the calibration of an ocular micrometer, two (2) stage micrometer divisions were observed to line up with ten (10). If the graduation interval on the stage micrometer is 0.01mm, calculate: i. The calibrated value of the ocular micrometer in um.ii. The size of Pseudomonas aeruginosa which has occupied 5 ocular divisions. 3. What are the methods of staining?a. How was the specimen prepared for the microscopy technique applied? (for e.g. stained with H&E stain, Gram stain, unstained) b. What is the microscopy technique and magnification used to obtain this image? c. What is the basic principle of image formation using this microscopy technique? d. What can be observed and concluded from the image of the specimen? e. Are there any potential aberrations present in this specimen image? Describe these and how they may affect interpretation of the result.
- a. Do you open both eyes or close one eye when viewing a specimen under a microscope? Why? Why not? b. In using a compound microscope, do you start with the low power objective (LPO) or the high power objective (HPO)? Why or Why not? c. When using 60X, do you it together with the coarse adjustment knob or fine adjustment knob? d. Why must you slowly turn the fine adjustment knob? e. Is natural light or is artificial light used when using the microscope?Which of the following microscopy techniques can be used in live cell imaging in a live animal. 1. Structured illumination microscopy 2. Stimulated emission depletion microscopy 3. Photoactivated localization microscopy 4. Two-photon excitation microscopy 5. Total internal reflection microscopy 6. Light-sheet microscopy O4 and 6 O2, 3 and 6 O1 and 4 3 and 5 O2 and 41. In microscopy, what could be the possible reason why we cannot completely resolve the specimen under the Oil Immersion Objective (OIO) when, in fact, it was taught that the OIO has a resolving poewer? 2. When using the OIO, we can only focus on one group or parts at a time. (that is, the other parts are blurred) Whys is it so?
- For what purpose would you adjust each of the following microscopecomponents during a microscopy exercise?a. Iris diaphragm:b. Coarse-adjustment knob:c. Fine-adjustment knob:d. Condenser:e. Mechanical stage control:What is/are the characteristics of an ideal microscope? I. Low f-number. II. High f-number. III. Short wavelength of "light" used IV. Long wavelength of "light" used A. I only. B. II only. C. III only. D. Both I and III. E. Both II and IV.As with standard phase contrast microscopy,differential-interference contrast microscopy depends on differences in the ___________________ of a speciment to create high-contrast images. a. refractive index b. light absorption c. natural fluorescence d. walls and coverings e. natural pigmentation
- 3. Using the information provided, calculate the size of the objects viewed. Hint you will need to calculate the FOV. b. These cells are being viewed under high power. Use the length of just one cell to estimate the number of cells that can fit into the FOV. Scanning power objective = 5X; Low power objective = 40X; High power objective = 100X; Eyepiece = 10X; Low power field of view (FOV) = 1.5 mm3. Using the information provided, calculate the size of the objects viewed. Hint you will need to calculate the FOV. b.These cells are being viewed under high power. Use the length of just one cell to estimate the number of cells that can fit into the FOV. Scanning power objective = 5X; Low power objective = 40X; High power objective = 100X; Eyepiece = 10X; Low power field of view (FOV) = 1.5 mma. Explain the purposes of tissue fixation and tissue staining. b. Identify the factors that affect the quality, of tissue fixation and describe the effects of fixation on tissue (e.g., Temperature, size of tissue, time of fixation, or osmolality of fixative.) c. Describe the following types of microscopes and describe reasons for their use. a. Light (compound microscopy), b Polarizing microscopy, c. Phase-contrast, d. Interference microscopy, e. Darkfield, f. Fluorescence, g. Electron (scanning and transmission). h. Confocal microscope. d.…
