Foundations in Microbiology
10th Edition
ISBN: 9781259705212
Author: Kathleen Park Talaro, Barry Chess Instructor
Publisher: McGraw-Hill Education
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Chapter 3.L1, Problem 5MCQ
Summary Introduction
Introduction:
Magnification is the ability to make objects appear enlarged. It enables the ready observation of tiny life forms that cannot be seen with naked eyes, which is facilitated by microscopes. Magnification in most microscopes results from a complex interaction between visible light waves and the curvature of the lens.
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The process that most accounts for magnification is a. a condenser c. illumination b. refraction of light rays d. resolution
It is desirable that the microscope objectives be parfocal because the specimen will be ..................
a)blurry due to the changes in the refractive index of the medium
b)stay in focus when the light is turned off
c)have more contrast and enhanced details
d)remain in focus if the magnification is changed
e)none of the answer choices
Explain how total magnification is calculated.
Select an answer.
a. It is the magnification of the objective lens multiplied by the magnification of the condenser lens
b. It is the magnification of the objective lens multiplied by the magnification of the ocular lens
c. It is the magnification of the objective lens used
d. It is the magnification of the ocular lens used
Chapter 3 Solutions
Foundations in Microbiology
Ch. 3.1 - Explain what unique characteristics of...Ch. 3.1 - Briefly outline the processes and purposes of the...Ch. 3.1 - Name the notable features of microorganisms that...Ch. 3.1 - In one sentence each, define what is involved in...Ch. 3.2 - Prob. 3ELOCh. 3.2 - Prob. 4ELOCh. 3.2 - Prob. 5ELOCh. 3.2 - Prob. 6ELOCh. 3.2 - Prob. 7ELOCh. 3.2 - Prob. 8ELO
Ch. 3.2 - Prob. 3CYPCh. 3.2 - Prob. 4CYPCh. 3.2 - Prob. 5CYPCh. 3.2 - Prob. 6CYPCh. 3.2 - Prob. 7CYPCh. 3.2 - Prob. 8CYPCh. 3.2 - Prob. 9CYPCh. 3.2 - Compare the way that the image is formed in the...Ch. 3.3 - Prob. 9ELOCh. 3.3 - Define dyes and describe the basic chemistry...Ch. 3.3 - Prob. 11ELOCh. 3.3 - Distinguish between simple, differential, and...Ch. 3.3 - Describe the process of Gram staining and how its...Ch. 3.3 - Prob. 11CYPCh. 3.3 - Explain what happens in positive staining to cause...Ch. 3.3 - Prob. 13CYPCh. 3.3 - For a stain to be considered differential, what...Ch. 3.3 - Prob. 15CYPCh. 3.4 - Prob. 14ELOCh. 3.4 - Prob. 15ELOCh. 3.4 - Explain what an isolated colony is and indicate...Ch. 3.4 - Differentiate between a pure culture, subculture,...Ch. 3.4 - What kinds of data are collected during...Ch. 3.4 - Prob. 19ELOCh. 3.4 - Prob. 16CYPCh. 3.4 - Prob. 17CYPCh. 3.4 - Prob. 18CYPCh. 3.4 - Compare and contrast three common laboratory...Ch. 3.4 - Describe how an isolated colony forms.Ch. 3.4 - Prob. 21CYPCh. 3.5 - Prob. 20ELOCh. 3.5 - Name the three general categories of media, based...Ch. 3.5 - Compare and contrast liquid, solid, and semisolid...Ch. 3.5 - Prob. 23ELOCh. 3.5 - Prob. 24ELOCh. 3.5 - Identify the qualities of enriched, selective, and...Ch. 3.5 - Explain what it means to say that microorganisms...Ch. 3.5 - Describe live media and the circumstances that...Ch. 3.5 - Describe the main purposes of media, and compare...Ch. 3.5 - Differentiate among the ingredients and functions...Ch. 3.5 - Explain the two principal functions of dyes in...Ch. 3.5 - Why are some bacteria difficult to grow in the...Ch. 3.5 - What conditions are necessary to cultivate viruses...Ch. 3.L1 - Prob. 1MCQCh. 3.L1 - Prob. 2MCQCh. 3.L1 - Prob. 3MCQCh. 3.L1 - Prob. 4MCQCh. 3.L1 - Prob. 5MCQCh. 3.L1 - Prob. 6MCQCh. 3.L1 - Resolution is _____________ with a longer...Ch. 3.L1 - Prob. 8MCQCh. 3.L1 - Prob. 9MCQCh. 3.L1 - The specimen for an electron microscope is always...Ch. 3.L1 - Motility is best observed with a a. hanging drop...Ch. 3.L1 - Prob. 12MCQCh. 3.L1 - Prob. 13MCQCh. 3.L1 - Prob. 14MCQCh. 3.L1 - What type of medium is used to maintain and...Ch. 3.L1 - Prob. 16MCQCh. 3.L1 - Multiple Matching. For each type of medium, select...Ch. 3.L1 - Prob. 1CSRCh. 3.L1 - Prob. 2CSRCh. 3.L1 - Prob. 3CSRCh. 3.L1 - Prob. 1WCCh. 3.L1 - Prob. 2WCCh. 3.L1 - Prob. 3WCCh. 3.L1 - Describe the steps of the Gram stain, and explain...Ch. 3.L1 - Describe the steps you would take to isolate,...Ch. 3.L1 - Prob. 6WCCh. 3.L1 - Evaluate the following preparations in terms of...Ch. 3.L2 - A certain medium has the following composition: a....Ch. 3.L2 - a. Name four categories that blood agar fits. b....Ch. 3.L2 - Prob. 3CTCh. 3.L2 - Go back to section 1.2 and observe the six...Ch. 3.L2 - Since the dyes for the Gram stain are not specific...Ch. 3.L2 - Examine figure 3.10a, b (shown here). If you...Ch. 3.L2 - Prob. 2VC
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- The primary difference between a TEM and SEM is in a. magnification capability b. colored versus black-and-white images c. preparation of the specimen d. type of lensesarrow_forwardDyes are used to stain specimens that will be observed using the microscope to a. increase the magnification. b. increase resolution. c. increase contrast. d. make it visible. e. none of the above.arrow_forwardExplain the difference between resolution and magnification.arrow_forward
- Larger plate height corresponds to which of the following? a. Higher resolution b. Lower resolution c. Slower separation d. Faster separationarrow_forwardWhat is the proper method of cleaning the microscope? Select an answer. a. Change the magnification to the lowest power, clean the objective lens and ocular lens with lens paper b. Change the magnification to the highest power, clean the objective lens and ocular lens with lens paper c. Change the magnification to the lowest power, clean the objective lens and ocular lens with a paper towelarrow_forwardA microscope that has a total magnification of 1,500× when using the oil immersion objective has an ocular of what power? a. 150× c. 15× b. 1.5× d. 30×arrow_forward
- Which of the following will decrease the limit of resolution (Select all that applies) a) using lower wavelength of illumination b) using an objective lens with lower numerical aperature c) using immersion oil d) using electron as the source of illumination instead of lightarrow_forwardDescribe how you would use a compound light microscope with the 4 objective lenses to view a specimen on a pre-made slide up to a total magnification of 400X.arrow_forwardWhich of the following has the shortest wavelenght? A. Radiowave B. infrared c. visible light d. UV light e. fluorescence lightarrow_forward
- what is bibulous paper used for? a. bleaching the benchtop b. cleaning microscope lenses. c. creating white flags of surrender d. drying slides.arrow_forwardContrast the concepts of magnification, refraction, and resolution.arrow_forwardSelect ALL the correctly matched terms: a. Immersion oil/ Oil with a different refrative index than air, used to enhance magnification b. Luminescence/ Absorption of light and energy within a sample c. Fluorescence/ Absorbed light rays are changed into longer wavelengths and re-emitted d. Diffraction/ Bending of light rays around an openingarrow_forward
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