Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 4, Problem 12TYK
Summary Introduction
To review:
There are many compound microscopes which have a filter that eliminates all the wavelengths except that of the blue light and thus, it allows only blue light to pass through the microscope. The filter improves the resolution of the light microscope.
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The magnification possible with any type of microscope is an important property, but its resolution, the ability to distinguish between two very closely apposed objects, is even more critical. Describe why the resolving power of a microscope is more important for seeing finer details than its magnification.
3D dimensionality is a limitation of the compound
microscope. Depth of field, DOF, describes dimensionality
form top to bottom and can be observed with colored cross
threads. Observe the crossed thread slide on low power
(4x), then on medium power (10x), then on high power
(40x objective magnification).
Which crossed fiber is on top?
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Chapter 4 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 4.1 - Prob. 1SBCh. 4.2 - Where in a prokaryotic cell is DNA found? How is...Ch. 4.3 - Where in a eukaryotic cell is DNA found? How is...Ch. 4.3 - Prob. 2SBCh. 4.3 - Explain the structure and function of the...Ch. 4.3 - Prob. 4SBCh. 4.3 - What is the structure and function of the...Ch. 4.4 - Prob. 1SBCh. 4.4 - Prob. 2SBCh. 4.5 - What are the structures and function of anchoring...
Ch. 4.5 - Prob. 2SBCh. 4 - A prokaryote converts food energy into the...Ch. 4 - Eukaryotic and prokaryotic ribosomes are similar...Ch. 4 - Which of the following structures does not require...Ch. 4 - Which of the following structures is not used in...Ch. 4 - Which of the following are glycoproteins whose...Ch. 4 - Prob. 6TYKCh. 4 - Which of the following statements about proteins...Ch. 4 - Which of the following is not a component of the...Ch. 4 - Discuss Concepts Explain why aliens invading Earth...Ch. 4 - You are examining a cell from a crime scene using...Ch. 4 - Prob. 11TYKCh. 4 - Prob. 12TYKCh. 4 - Prob. 13TYKCh. 4 - Prob. 14TYKCh. 4 - Prob. 15TYKCh. 4 - Prob. 16TYKCh. 4 - 17. The unicellular alga Chlamydomonas reinhardtii...Ch. 4 - Prob. 1ITD
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- Explain why resolving power is important in microscopy.arrow_forwardAlternatives used on a light microscope might improve vision by using a different light source. Name two types of light sources.arrow_forwardFill in table 1 below for the characteristics of your microscopes. Table 1- Characteristics of the microscope Low Power (Dry) High Power (Immersion Oil) Features Medium Power (Dry) Focal length (mm) Working distance (mm) Linear Magnification (X) Numerical aperture (N.A.) Diameter of front lens (mm)arrow_forward
- Blue light has the shortest wavelength in the visible spectrum. If blue light were used with a microscope would resolution be improved? explainarrow_forwardProvide an example that illustrates the difference between low and high contrast. List the parts of the microscope that light passes through from the light source to your eye?arrow_forwardWhat are the differences and similarities between Transmission Electron Microscope (TEM) and Scanning Electron Microscope (SEM). Please explain in detail.arrow_forward
- Explain when to use bright-field, phase-contrast, dark-field, fluorescence, transmission electron, and scanning electron microscopy for a given situation. What is an example of this situation?arrow_forwardDefine scanning electron microscope (SEM)arrow_forwardWhat are the various steps needed to obtain a high-resolution image in an optical microscope?arrow_forward
- Explain briefly why the 100X objective lens of the light microscope is immersed in oil.arrow_forwardUsing the microscope Answer the following questions as you work through this exercise: 1. How is the letter “e” on the slide oriented when you see it with the naked eye as you mount it on the stage (i.e., is it right side up or upside down)? 2. How is the letter “e” on the slide oriented when you see it under low or high power magnification? 3. What effect, if any, does the compound light microscope have on the orientation of the image?arrow_forwardL of Microscopes: 1. If you have a standard ocular lens of 10x what is the true magnification that you are looking at if you are using the 100x objective lens. What is the rule for focusing if you switch to the 40x lens? 2. Calculate the sizes of the following cells. Not all cells are viewed at 40x so use the following table to calculate the size of your cells. 4x 1 reticular unit = .025 mm 10x 1 reticular unit = .01 mm 40x 1 reticular unit-.0025 mm 4 points A) Cell 1 on 10x=8 reticular units B) Cell 2 on 40 x = 28 reticular units mm mm Which one is actually larger? Which one is probably the plant cell? Why?arrow_forward
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