Ch 3, Overview of the cellular basis of life

Question 1

Cell Theory

Answer 1

1. the cell is the basic unit of life
2. organismal functions depend on individual and collective cell functions
3. biochemical activities of cells are dictated by their specific subcellular structures= principle of complementarity
4. continuity of life has a cellular basis–cells come from cells

Question 2

characteristic of cells

Answer 2

1. over 200 types of human cells
2. chemically mainly C H N O and trace elements
3. types differ in size, shapes, organelles and functions
4. structure complements function
5. all cells have some common structures and functions