The ability of a membrane to permit passage of substances is called__________

The ability of cancerous cells to form new blood vessels is called

The number of atoms present in a molecule of a substance is called its_______

The branch of chemistry, which deals with the separation, identification and quantitative determination of the compositioni of different substances, is called_____________chemistry.

Selective permeable membrane allow passage of

The ability of a material to resist fracturing when force is applied to it, is called