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5 Cards in this Set
- Front
- Back
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Volume Factors |
- when a cell increases in size, so does its' chemical activity - this means that more substances need to be taken in and more need to be removed - affects the rate at which material are made or used within the cell - chemical activity per unit of time |
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Surface Area Factors |
- surface area affects the rate at which particles can enter and exit the cell - the amount of substances that it takes up from the environment and excretes into the environment |
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Volume to Surface Area Relationship |
- as the volume increases, so does the surface area but not to the same extent - when cell gets bigger, its surface area to volume ratio gets smaller |
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Example of Volume to Surface Area Ratio |
Cube One: - Surface Area: 6 sides x 1^2 = 6cm^2 - Volume: 1^3 = 1cm^3 - Ratio: 6:1 Cube Two: - Surface Area: 6 sides x 3^2 = 54cm^2 - Volume: 3^3 = 27 cm^3 - Ratio: 2:1 Cube Three: - Surface Area: 6 sides x 4^2 = 96 cm^2 - Volume: 4^3 = 64 cm^3 - Ratio: 1.5: 1 |
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Example Explanation: |
- the cube with the largest surface area and volume has the smallest surface area to volume ratio - if the surface area gets too small, then substances won't be able to enter the cell fast enough to fuel the reactions and waste products will start to accumulate |
