… Facilitated Diffusion . This is when membrane proteins chemically bind to a particle on one side of the membrane, carry it across the membrane, and release is on the other side moving WITH the concentration gradient.
No cellular energy is required since its moving ‘with the flow.’
CF is an incurable genetic disease that affects 1 in every 3,000 Caucasian births.
It involves a chronic cough, lung infections, and digestion problems.
25% of patients survive in their 30’s.
What causes it?
CF is caused by a mutation in the gene of a membrane protein (CFTR protein) – this protein is a part of the cell membrane and helps regulate the movement of chlorine ions (Cl - ) across the cell membrane.