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Identify and label each parts of the micrscope.
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- A lab revolving around compound microscopes was conducted. Please answer the following questions (questions 1, 2, and 3). If a specimen (placed on a slide) has little or no color, what level of light intensity should you use; should the intenisty of the light be high or low (choose)? Which objective should be in position before you start to focus the microscope? Which focus knob should you use first with this objective?Describe the microscope in 2-3 sentencesWhich microscopy technique is BEST at determining the presence of physical microbial interaction(s)? a Light microscopy. b Scanning or transmission electron microscopy. c Fluorescent microscopy. d Phase contrast microscopy.
- Give a particular use/uses of the following types of a microscope: 1. Research microscope 2. Stereomicroscope 3. Student microscope 4. Projection microscopeWhat is the importance of using an immersion oil in 100x magnification? Describe the changes in the field of view and the amount of available light when going from low to high power using the compound microscope. Give some limitations in the use of microscope. Conclusion about microscopeA student missed the laboratory period where the use of the microscope was demonstrated. The instructor asked the student to read the description in the laboratory manual and then proceed to examine bacterial cells with the oil immersion lens. The student skimmed the directions and began. After about 15 minutes of struggling, the student gave up in despair without seeing anything. Below is a detailed description of what the student did. How many mistakes did the student make and why didn’t the student see anything? a. Plugged in the microscope and turned the light source to maximum intensity. Made a wet mount and placed it on the stage with the low-power objective lens in position. Tried to focus with the coarse adjustment, but decided the bacteria were too small and needed to be seen with the high-power objective lens. Rotated the high-power objective lens into position, but saw the lens would likely touch the slide, so lowered the stage so that the objective lens rotated freely.…
- Non-conducting materials can be studied by scanning tunneling microscope(STM). 1.True 2. FalsePlace the path of light (using the numbers) in the microscope in the proper order as the light travels from its source until it hits the researcher’s eye: 1) condenser 2) light source 3) nose- piece lens 4) ocular lens 5) slide a) 1, 2, 5, 4, 3 b) 1, 3, 4, 2, 5 c) 2, 1, 5, 3, 4 d) 3, 2, 1, 4, 5 e) 1, 3, 4, 2, 5I have a microscope with oculars that are 20x and am viewing a slide using oculars that are 50x. What is the overall magnification?
- 1. Differentiate the compound light microscope from the dissecting microscope in terms of: *image produced *magnification *type of specimen examined 2. Write down the principles of the following: *electron microscopy *scanning tunneling microscopy *atomic force microscopyWhich type of microscope(s) would be used to examine the following specimens? Explain each of your answers. Photosynthetic bacteria Swimming bacteria Unstained microbes Pond scumWhat type of microscope is suitable for observing thin and translucent specimens?
