C2 SA:V Flashcards

1
Q

Define surface area

A

Sum of the area of each side of the object

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2
Q

Volume

A

Space the object takes up in 3D

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3
Q

SA:V ratio

A

Surface area divided by volume (outer most layer of something divided by the amount of space being occupied)

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4
Q

How does SA:V relate to cell?

A

The bigger the cell, then it’s SA:V ratio decreases

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5
Q

What happens with smaller volume?

A

Faster efficiency + faster rate of diffusion

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6
Q

What happens when SA is bigger than V?

A

More efficient

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7
Q

What happens when volume is bigger?

A

Decrease in efficiency + rate of diffusion slows

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8
Q

How is bigger V bad?

A

Many organelles need material to be released and nutrients to be delivered quickly, bigger V means slower diffusion meaning organelles cannot get nutrients as fast as smaller V

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9
Q

What limits the size of cell?

A

Rate of diffusion (because bigger cell = smaller SA:V ratio)

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10
Q

What determines the size and shape of cells in multicellular organisms?

A

The function of the cell/state of cell (+ water amount + cytoskeleton)

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