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9 Cards in this Set
- Front
- Back
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The cell theory states: |
All Organisms are composed of Cells. CELLS are the basic living unit of structure and function in organisms. All cells come only from other cells. |
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Who were credited for formulating the cell theory? |
Theodore Schwann Matthias Schleiden Rodulf Virchow |
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Describe the sizes of the cells? Why is the cell small and what limits the size of the cell? |
Most cells are small, they cannot be seen without the use of the microscope. Some are big enough we can see with our eyes, i.e. the egg yolk of an egg. Cell cannot go above 10mm Cell size is limited by a cell's surface area to volume ratio. |
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What is the importance of greater surface area-to-volume in smaller cells? |
-Greater surface area-to-volume -Faster rate of metabolism -Faster rate of transport -Faster growth rate |
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Microscopy |
The use of light or electrons to magnify objects |
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Factors affecting quality of image |
Wavelength Resolution Magnification Contrast |
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Wavelength |
The lower the wavelength the higher the resolution, the distance between the two waves, higher wavelength is lower resolution |
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Resolution |
Clarity of image, the sharpness. The lit of resolution is the minimum distance of two separate points or objects to ve viewed as separate. .1MM IS THE SMALLEST WE CAN SEE AS TWO SEPERATE OBJECTS. |
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Magnification |
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