Cystic fibrosis is a genetic disease that leads to a faulty membrane protein for the transport of chloride ions. The protein is still in the membrane; it just doesn't function normally. What type of membrane protein is being affected in this case

Bc they get tired from playing with other kittens

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension  of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.