Chapter 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.