NEET BIOLOGY

Detailed explanation-1: -Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration-against the concentration gradient.

Detailed explanation-2: -Active transport is the movement of molecules across a cell membrane in the direction against their concentration gradient, going from a low concentration to a high concentration.

Detailed explanation-3: -Osmosis. Osmosis is a specific type of diffusion; it is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration. Water moves in or out of a cell until its concentration is the same on both sides of the plasma membrane.

Detailed explanation-4: -Diffusion is the movement of substances through the membrane from an area of higher concentration to an area of lower concentration. Molecules that are small, uncharged, and/or non-polar can pass right through the membrane by simple diffusion which occurs following the concentration gradient (high to low).

Detailed explanation-5: -Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. For cell transport, diffusion is the movement of small molecules across the cell membrane.