Bio 101 Flash Cards

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Title: Bio 101
Description: lab quiz
Number of Cards: 10
Save Count: 0
Author: beijao20109
Created: 2012-01-22
Tags: quiz
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    • Question
    • Answer
    • Side 3
    • what do biologists use to see small biological structures and organisms?
    • Light microscope
    • what is a light microscope?
    • A system of lenses that produce an enlarged, focusable image of a specimen.
    • what does magnifies mean?
    • increase the apparent size
    • what is a light microscope usually accompanied by?
    • Improved resolution,the ability to distinguish two separate points.
    • the better the resolution?
    • the sharper or crispier the image appears.
    • what is the approximate power of the unaided eye?
    • 0.1 mm ( 1in = 25.4 mm) our eyes can distinguish 2 points apart
    • What does the ability to discern detail depend on?
    • contrast
    • What does contrast mean?
    • difference between lightest to darkest
    • why do scientists stain some specimens?
    • to increase contrast. To make the specimen more visiable
    • why was the invention of a light microscope so important in biology?
    • because it was used to formulate the cell theory, and study biological structure at the cellular level.