2.2 #1 - Cell Size

Why are cells typically small?

Moving materials (such as nutrients and waste) in and out of cells gets more difficult the larger a cell is

How is the surface area to volume ratio calculated?

The larger the ratio, the more efficient the cell would be

What is the formula for the surface area?

SA = 6s^2

What is the formula for the volume?

V=s^2

What is the formula for the surface area to volume ratio?

SA / V (#:#)

Smaller cells typically have a _______ surface area-to-volume ratio and more ________ exchange of materials with the environment.

Higher, efficient

As cells increase in volume, the relative surface area _______ makes it difficult for larger cells to meet the demand for ________________ and remove waste sufficiently.

Decreases, internal resources

What do cells take in and give out?

Take in: oxygen and nutrients

Give out: heat, waste, and carbon dioxide

What is the correct answer?

D