Cell Growth

1
Cell Growth

• Chapter 10-1

2
Cell Growth

• Limits to Cell Growth
• Demands on cells DNA becomes too much for cells
  and they get bigger.
• Demands on movement of nutrients and waste across
  the cell membrane as it gets bigger.

3
Cell Growth

• The cell makes a copy of DNA when it replicates
  and creates a new cell.
• Cells do not make extra copies of DNA as they get
  larger.

4
Cell Growth

• The volume of the cell, determines the rate of
  the consumption and chemical waste production in
  the cell.

5
Cell Growth

• Divide the cells surface area by the volume to
  get the ratio of
• Surface area Volume
• Surface Area / Volume

6
Cell Growth

• What is the ratio for a cell with a surface area
  of 6 cubic centimeters and volume of 1 cubic
  centimeter.
• 6/1 or 6 1

7
Cell Growth

• A cells volume will increase more rapidly than
  its surface area.

8
Cell Growth

• The cells ratio decreases as the cells volume
  increases more rapidly than the surface area.

9
Division of the Cell

• Cell Division - is the process when a cell
  divides into two new daughter cells.

10

Division of the Cell

• The problem with increased volume of the cell is
  solved by the division of the cell.
• The cells volume is reduced when it is divided.