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"Education is the most powerful weapon which you can use to change the world”
– Nelson Mandela

2 Universities

1 Course

1 Subject

Group Work - Microscope

Group Work - Microscope

Q Part One This is a group activity. Only one submission per group. When submitting be sure to write the names of members who participated. Don't forget to indicate each ones responsibility or part of the assignment to be completed. You may use other platforms to communicate, however, indicate who is doing what in the discussion tab in Group tab. Use the Google doc link found in the "Group Tasks" option when you open your group page. Watch the following YouTube video and answer the questions following. https://www.youtube.com/watch?v=SUo2fHZaZCU&feature=youtu.be&ab_channel=FresnoState Questions 1.Which lens was the low power lens in this presentation? 2.When adding the slide to the stage clip what must not be done? 3.Which lens did they begin viewing with? Which lens did I say to begin with? 4.According to the video the image must be centered in the _________ _________ 5.Which lens was the highest-powered lens in this video? How is that different from the microscope we would use in lab? 6.If the slide does not move when you use the stage adjustment know what should you do to correct this? 7.What should be done if one has difficulty focusing the specimen? 8.If you are working with a specimen and you are a having difficulty view the slide, what would you look for? 9.What must be used to clean the lenses? What can other material not be used? Part Two - Oil Immersion video Watch the video on oil immersion (link is below) and give answers to the questions following. https://www.youtube.com/watch?v=baFTRZN_fQU&feature=youtu.be&ab_channel=LGSMicroscopes 1. Which lens is most likely to be damaged by oil? 2. Which lens is the oil immersion lens? 3. In the video, the presenter indicated you should lower your stage to add the oil? Why is this not the best technique? 4. How many drops of oil was added? 5. Is it okay to use the 10X objective if there is oil on the slide? 6. Give one precautionary step that can be take to help protect the lenses? 7. When cleaning the lenses what did the presenter use? Why do you think this is better than using paper towel of even a regular piece of cloth?

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1. Answer: 4x scanning objective color is red. 2. Answer: The lens should not move to higher power and to start with the lowest power lens which is 4x because it prevents damage to the lens and slide. 3. Answer: They begin viewing with 4X . Prof. Alcendor said to begin with 10 X. 4. Answer: According to the video the image must be centered in the highest position . 5. Answer: 40X is highest- powered lend in this video.