C2 SA:V

Question 1

Define surface area

Answer 1

Sum of the area of each side of the object

Question 2

Volume

Answer 2

Space the object takes up in 3D

Question 3

SA:V ratio

Answer 3

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

Question 4

How does SA:V relate to cell?

Answer 4

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

Question 5

What happens with smaller volume?

Answer 5

Faster efficiency + faster rate of diffusion

Question 6

What happens when SA is bigger than V?

Answer 6

More efficient

Question 7

What happens when volume is bigger?

Answer 7

Decrease in efficiency + rate of diffusion slows

Question 8

How is bigger V bad?

Answer 8

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

Question 9

What limits the size of cell?

Answer 9

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

Question 10

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

Answer 10

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