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MCB 2010 Test 2 Review Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution $7.99   Add to cart

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MCB 2010 Test 2 Review Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution

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MCB 2010 Test 2 Review Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution

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  • June 19, 2024
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MCB 2010 Test 2 Review
Review characteristics of a simple microscope - ANS-1. lens
2. location of specimen on pin
3. specimen- positioning screw
4. stage was a positioning screw
5. used natural light

compare simple and compound microscopes - ANS-1. compound: use multiple lenses
linked by an optical tubes to magnify and focus images. Objective lens at one side of
the tube enlarges an image of the specimen using lenses that magnify 4x, 10x, 40x,
100x. each objective lens is color coded. ocular lens at the other side of the tube
demagnifies the image ten more times. it has a condenser lens below the stage that
focuses the light for brighter image and it has an iris diaphragm that adjusts the light for
proper contrast between the image and the background.
2. simple microscopes: only have one lens, use natural light, and have no condenser or
diaphragm.

ocular lens - ANS-eye piece that demagnifies the image formed by the objective lens

body tube - ANS-transmits the image from the objective lens to the ocular lens

arm - ANS-side pillar

objective lenses - ANS-primary lenses that magnify the specimen

stage - ANS-holds the microscope side in position

condenser - ANS-focuses light through the specimen

diaphragm - ANS-controls the amount of light entering the condenser

illuminator - ANS-light source

fine and course adjustment knob - ANS-move stage up and down

base - ANS-bottom of the microscope

Antoni Van Leeuwenhoek - ANS-invented the simple microscope

, Robert Hooke - ANS-invented the first compound microscope and condenser (ball of
water)

Louis Joblot - ANS-first to put together all the pieces of microscope using side pillar
(arm) and iris diaphragm.

Aspects of magnification - ANS-1. objective lens power (4,10,40,100)
2. ocular lens power: 10x
3. objective lens power x ocular lens power = total magnification
4. objective lens always present in microscopy

magnification - ANS-has the power to reveal new details because of a higher resolution

magnification - ANS-as magnification increases, aperture size decreases, resolution
increases, working distance decreases and more details are revealed

lenses of compound microscope - ANS-1. ocular lens
2. objective lens

Name objective lens - ANS-1. red: 4x: scanning
2. yellow: 10x: low power
3. blue: 40x: high power
4. white: 100x: oil immersion

how to calculate total magnification - ANS-ocular lens power x objective lens power

resolution - ANS-the ability of an optical instrument to make more details visible,
allowing individual parts of an image, or very close objects, to be seen separately by
spacing them out. it also determines smallest size visible to the normal human eye and
limits how sensitive the eye is to extremely fine details.

useful magnification - ANS-any increase in magnification that produces a higher
resolution by revealing new details.

empty magnification - ANS-magnification that releases no more details or improves
resolution

limits of resolution - ANS-1. human eye: 200 um
2. light microscope: 200 nm

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