Random Analogies
There is always some moisture in the air, on our planet earth. At night, the sun goes down and everything cools. Often the ground cools faster and more than the air. Grass is close to the ground and has a very large surface area on which condensation can occur. So, as the air cools then the grass on the ground cools, the water dissolved in the air condenses on the the cool grass blades.
"Proteins like CcsBA that are embedded in the cell membrane are difficult to work with, Kranz explains. The membrane is a lipid, or fat, so trying to extract a membrane protein is like trying to wash greasy dishes in cold water. Frawley had to use detergents to separate the protein, he says, and even then it took her a year or two to purify enough protein to work with. "
"Bringing these neurotransmitter functions together using a metaphor of driving a car, norepinephrine is like putting your foot on the gas, acetylcholine is steering the car, and dopamine is the wish to go for a nice drive."
