Biology (Cell Size)

Cell Size

What is the formula for Surface area?

6 x (a x a)

Formula for Volume

a x a x a

As the cell grows larger, what happens to the surface area to volume ratio?

The ratio gets smaller

Which cell size has the greatest surface area to volume ratio?

1

Which measurement best represents how much cell membrane a cell has?

Surface Area

Which measurement describe the cell’s content?

Volume

When the cell grows older, the cell’s contents increase. Will it need more or less cell membrane?

More cell membrane to maintain a suitable surface area to volume ratio.

Why can’t cells survive when the surface area to volume ratio becomes too small?

• The cell membrane isn’t able to efficiently support the volume of the cell

• and transport necessary materials in and out of the cell effectively.

Which cell size has the greatest chance of survival? Explain

Cell size at 1 cm has he greatest chance of survival

• it has the highest surface area to volume ratio

Why are cells small?

to maintain the survivability of SA to V ratio

What is FOV

Field of Vision