Surface Area to Volume Ratio

What determines the rate of nutrients and waste are exchanged from the cell and the environment?

• surface ratio
• volume
• surface area
• surface area to volume ratio

Which cells are more efficient at obtaining nutrients?

• Small Cells
• Medium Size Cells
• Large Cells
• X-Large Cells

As a cell becomes larger, its

• surface area increases faster than its volume.
• volume increases faster than its surface area

The larger a cell is, the more difficult it is for the cell to move enough nutrients and wastes across its cell membrane to maintain its normal functions.

• True
• False

As a cell’s size increases, its ratio of surface area to volume decreases.

• True
• False

The rate at which wastes are produced by a cell partially depends on the cell’s

• surface area
• volume

How can surface area (SA) be increased? 

• Grow larger
• Divide into smaller pieces

High Surface area to volume ratio allows cells to do what quickly?

• Move materials around inside the cell
• Move materials in and out of the cell 
• Communicate to other cells
• Divide

This image shows how materials move into various sized cells in a given amount of time.... why does one square cell have more pink coloring than the others? 

• The surface area was too larger to get through
• The volume of the other cells was too large for the dye to get through
• There was not enough surface area for the dye to get through
• The volume was too low for the dye to stay in the square

Tags

NGSS.MS-LS1-2

Microvilli are tiny projections that extend off the cell to increase the Surface Area.  What purpose might that serve? 

• Increased absorption
• Better communication among cells
• Maintain homeostasis 
• Decreased oxygen use

Tags

NGSS.HS-LS1-2