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condition deliberately changed in an experiment
(Changing) |
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Only have one lens. They work like magnifying glasses that you have used. Their limitation was the small amount of magnification they produced. |
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deals with a microscope having more then one lens |
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is defined as the apparent size of an object, calculated as the product of the magnifying powers of the objective lens and the eyepiece |
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is the entire area that you see when you look through the microscope |
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the ability to see differences between structures due to differences in their capacity to absorb light |
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It is the ability to distinguish between two structures that are very close together |
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a microscope that uses a beam of electrons to produce images of fine detail |
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Transmission Electron Microscope (TEM) |
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an EM in which the image is formed by a beam of electrons that passes through a very thin section of a fix and stained specimen |
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Scanning Electron Microscope (SEM) |
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an EM in which a three-dimensional image is formed by electrons bouncing off the surface of the specimen |
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the idea that life could emerge spontaneously from non-living matter |
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An Italian physician and poet, questioned the belief that maggots appeared spontaneously from raw meat. Instead, he believed that flies laid their eggs in the meat. |
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Suggested there was a life force that produced spontaneous generation. He boiled chicken broth and put it in a flask and sealed it. |
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An Italian priest and scientist, refuted Needham’s claim and instead proposed that there were micro-organisms in the air that were responsible for the new growth. |
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A French chemist. designed an experiment to test whether sterile nutrient broth could spontaneously generate microbial life. To do this, he set up two experiments. In both, Pasteur added nutrient broth to flasks, bent the necks of the flasks into S shapes, and then boiled the broth to kill any existing microbes. |
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Discovered nucleus in the plant cell |
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a German botanist who believed that all plants were made of cells and contained a nucleus |
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A German animal physiologist who believes that animals cell contain nucleus and made of cell |
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a. All organisms are made up of cells
•Unicellular
•Multicellular
b. The cell carries out the basic function of an organism
c. New cells are not created they come from the division of existing cells |
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Determines the relative position of genes on chromosomes |
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exchanges matter and energy with the environment |
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