Describe the meaning of the atomic number, mass number and molecular weight of
an element; use carbon as an example. What defines an isotype of this element? Why
does carbon form up to four covalent bonds?

Name the four classes of biological molecules, give an example of each and describe
its function in the human body. Which type is used to store genetic information?

Describe the characteristics of diffusion, osmosis, facilitated transport, active
transport and receptor-mediated endocytosis across a cellular membrane.