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Cards In This Set
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Three main points of Cell Theory
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1) All living things are made up of cells
2) Cell are the basic units of structure and function in living things
3) Living cells come only from other living cells
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A cell's size is limited by its ______.
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Surface area to volume ratio
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What must a cell be large enough to do?
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A) hold its organells
b) perform chemical reactions
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What must a cell be small enough to do?
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Have enough surface area to supply its volume with nutrients
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Surface area equation
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Length X width X number of surfaces
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Volume equation
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Length X width X height
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Surface area to volume ratio equation
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Surface area
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volume
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As a cell grows, what happens to its surface area to volume ratio?
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It decreases
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A cell cube has 3cm/side, what is its:
1) surface area
2) volume
3) Simpliest ratio
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1) 54cm2
2) 27cm2
3) 2:1
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When a cell grows and it's S.A. to V.R. decreases, what effects does this have of diffusion?
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Diffusion decreases and becomes less efficient
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When a cell divides, what happens to its surface area and volume?
Why?
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They decrease causing the ratio to increase and diffusion rate to increase.
Because the volume decreases more in comparision to the surface area
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Is cell division beneficial to the rate of diffusion?
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Yes
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How big is a prokaryote cell?
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2 - 8 micrometers
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Does a prokaryote cell have a nucleus?
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No
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Where is DNA located in a prokaryote cell?
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In the cytoplasm
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