Sa/V

The surface area of a cell is

• the total amount of space taken up by a cell

• the area of a cell

• the outer surface of the cell, the plasma membrane

• a comparison between the surface area and the volume of the cell

The volume of a cell is

• the cytoplasm in the cell

• the outer surface of the cell

• how loud the cell is

• the total amount of space taken up by a cell, including all cellular contents

How is the surface area to volume ratio of a cell calculated

• surface area plus volume

• surface area divided by volume

• surface area multiplied by volume

• surface area minus volume

As a cell grows larger the SA:V of that cell

• increases

• decreases

• does not change

• changes proportionately

The _______________ grows faster than the _________________ when a cell grows

• surface area , volume

• cytoplasm , membrane

• membrane , cytoplasm

• volume , surface area

Objects can increase their SA:V by...

• shrinking

• creating more volume

• growing larger

• having a long, flat shape

Multicellular organisms overcome the problem of SA:V by

• shrinking as they get older

• growing really large

• dividing into many cells

• having many small cells that all have a different role, but work together to allow function

Tags

NGSS.HS-LS1-2

Why are cells microscopic in size?

• they need to be able to hide

• they need to maximise their SA:V to ensure they are efficiently supplied with nutrients so they can survive

• they want to minimise their surface area

• they need to minimise their SA:V to ensure they are efficiently supplied with nutrients so they can survive

Small cells have a...

• Higher SA:V ratio

• Smaller SA:V ratio

If a cell increases its SA:V ratio....

• substances will enter and exit the cell more efficiently

• substances will enter and exit the cell less efficiently

• substances will not enter and exit the cell

• no change will occur