Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
12th Edition
ISBN: 9780134605203
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 3CT
Why isn’t the oil immersion lens used in the hanging-drop procedure?
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Why is it necessary to use oil in conjunction with the oil immersion lens and not with the other objectives?
Why is it necessary to use the fine adjustment knob with higher magnification?
John observed bacteria at 100X under the oil immersion and then decided to go back to 40X objective by raising the oil objective a little to avoid the damage to objective lens. Critique his technique.
Chapter 2 Solutions
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
Ch. 2 - What, if any, practical value do these techniques...Ch. 2 - Prob. 2QCh. 2 - Why is petroleum jelly used in the hanging-drop...Ch. 2 - Why are microorganisms hard to see in wet...Ch. 2 - Can you distinguish the prokaryotic organisms from...Ch. 2 - Why isnt the oil immersion lens used in the...Ch. 2 - Where did the organisms in the infusions come...Ch. 2 - A wet mount may be used for quick examination of...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- When using the oil immersion lens, what four procedures can be implemented to achieve the maximum resolution?arrow_forwardWhy do you use immersion oil with 100X objective lens?arrow_forwardWhat is the objective lens used to locate the specimen and first focus? What is the difference in using a coarse adjustment knob and a fine adjustment knob?arrow_forward
- Do the calibration factor computed varies according to different magnification (objective lenses being used)? Explain.arrow_forwardWhat is the specific objective lens that is used to locate the specimen and first focus? Explain. What is the difference between using a coarse adjustment knob and a fine adjustment knob?arrow_forwardIf you have chosen the objective lens with 10x and the ocular lens magnification is also 10x. Then the total magnification will be 100x. True Falsearrow_forward
- Why do you use oil on the slide to be examined with the oil-immersion objective?arrow_forwardSal said that the microscope had a total of 400x magnification because the eye tube had a level of 10x and the objective lens had a magnification of 40x. Is sal correctarrow_forwardWhat part of the microscope is used to make small-scale adjustments to the height of the stage? Group of answer choices 1. fine focus 2. iris diaphragm 3. eye pieces 4. coarse focus 5. slide holder adjustmentarrow_forward
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