Chapter 10-1Chapter 10-1

• Limits to Cell Growth

• Demands on cell’s 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.

• 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.

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

• Divide the cells surface area by the volume to get the ratio of

• Surface area : Volume

• Surface Area / Volume

• 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

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

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

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

• The problem with increased volume of the cell is solved by the division of the cell.

• The cell’s volume is reduced when it is divided.