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| orderly process of posing and answering questions about the natural world through repeated and unbiased experiments and observations |
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| steps that maintain as much objectivity and repeatability as possible |
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| observation hypothesis experiment conclusion |
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| a statement that clearly states the relationship between biological variables |
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| most common way to state a clear and testable hypothesis, states that there is no difference, first hypothesis (H0) |
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| levels of the variables ex sugar and protein added to a sample |
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| what makes the experiment work |
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| highest and lowest values in a set |
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| average of a groups measurements |
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| indicates how measurements vary about the mean |
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| used to make measurements used everywhere except US |
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| mass per unit volume mass/volume = D |
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| coordinated system of lenses arranged to produce an enlarged focusable image of a speciamen |
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| difference between the lightest and darkest parts of an image |
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| ability to distinguish two points as separate points |
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| is the light bulb located at the base of the microscope |
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| located immediately below specimen, focuses light from the light source onto the specimen |
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| lever that can be opened and closed to regulate the amount of light reached on the specimen |
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| 3 or 4 lenses mounted on a revolving nose piece. |
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| those with two binocular microscopes, usually magnifies the lenses 10x |
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| metal casing through which light passes to the oculars. |
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| secures the glass slide on which the specimen is mounted |
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| lense which you look through |
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| concentrates on the light of the specimen and consists of a light source, condenser lens and iris diphragm |
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| improves resolution and magnifies the image. |
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| microscopes with one ocular |
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| microscopes with 2 oculars |
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| metal casing through which light passes to the oculars. |
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| secures the glass on which the specimen is mounted |
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| the image will remain nearly focused after the 40x objective lens is moved into place. most microscopes are this |
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| image will remain centered in the field of view after the 40x objective lens in place |
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| objective magnification x ocular magnification |
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| changes the specimen to objective distance slightly and therefore makes it easy to fine focus |
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| the area that you can see through the ocular and objective |
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| this is what the field of view is measured by |
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| small glass disk with thin lines numbered in a row put into the ocular so the lines appear on the image which allows you to measure specimen |
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| a glass slide having precisely spaced lines etched at known intervals |
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| gives more distance, making it possible to dissect and manipulate most specimens |
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