One big difference between osmosis and diffusion is that both solvent and solute particles are free to move in diffusion, but when we talk about osmosis, only the solvent molecules (water molecules) cross the membrane.
Familial Cancer Program. The Familial Cancer Program at Norris Cotton Cancer Center provides counseling for people who may have an increased risk of cancer because of their personal and/or family history. The issues surrounding inherited risk and genetic testing are complicated.
Some risk factors for cancer can be avoided, but many cannot. For example, both smoking and inheriting certain genes are risk factors for some types of cancer, but only smoking can be avoided. Regular exercise and a healthy diet may be protective factors for some types of cancer.