NEET BIOLOGY

Detailed explanation-1: -Exocytosis (exo = external, cytosis = transport mechanism) is a form of bulk transport in which materials are transported from the inside to the outside of the cell in membrane-bound vesicles that fuse with the plasma membrane.

Detailed explanation-2: -Exocytosis is the process by which cells move materials from within the cell into the extracellular fluid. Exocytosis occurs when a vesicle fuses with the plasma membrane, allowing its contents to be released outside the cell.

Detailed explanation-3: -The movement of materials into a cell comes in two possible ways: passive transport or active transport. Passive transport is any means that does not require the consumption of energy (ATP) to facilitate the transport. These include osmosis, diffusion, and facilitated diffusion.

Detailed explanation-4: -Plasma membrane controls the flow of substances in and out of cell.

Detailed explanation-5: -Active transport: moving against a gradient To move substances against a concentration or electrochemical gradient, a cell must use energy. Active transport mechanisms do just this, expending energy (often in the form of ATP) to maintain the right concentrations of ions and molecules in living cells.