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10 Cards in this Set
- Front
- Back
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Cell Theory
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All living Organisims are composed of cells
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What is a virus
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A virus is a non-celluar strucutre consiting of DNA or RNA that is surrounded by a protien coat.
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Where do new Cells come from?
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From Prexisting cells
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What are three advantages to using a light microscope?
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colour images
larger field of view examining live material |
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What are the advantages of using an electron microscope?
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Resolution
Magnification |
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What is Resolution?
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the clarity at which you observe objects.
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What is magnification?
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how many times larger it is than in real life.
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What is the importance of the Surface Area to volume ratio as a factor that limits cell size?
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the rate of metabolism of a cell is a function of its mass:volume ratio, whereas the rate of exchange of materials and energy (heat) is a function of surface area
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What do unicellular orgainsims do?
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Unicellular organisms carry out the functions of life
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How are cells in multicellular organisims different?
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They are differnt becuase they each carry out a specialized function tht exspresses some of thier genes but not others
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