AP BIOLOGY

Detailed explanation-1: -Osmosis is a form of passive transport when water molecules move from low solute concentration(high water concentration) to high solute or low water concentration across a membrane that is not permeable to the solute. There is a form of passive transport called facilitated diffusion.

Detailed explanation-2: -Osmosis is the movement of water molecules from its region of higher concentration to its region of lower concentration through a membrane.

Detailed explanation-3: -Water, which can quickly pass through the membrane via channel proteins, will begin to leave the cell at a higher rate than it enters, with a net movement to the area with a high concentration of A, thus lowering the concentration. This is an example of osmosis.

Detailed explanation-4: -Passive transport does not require the cell to expend any energy and involves a substance diffusing down its concentration gradient across a membrane.

Detailed explanation-5: -Active transport moves molecules and ions from lower concentration to higher concentration with the help of energy in the form of ATP. On the other hand, passive transport moves molecules and ions from a higher concentration to lower concentration without any energy.