Endocytosis and Exocytosis

Endocytosis and Exocytosis - Endocytosis and Exocytosis...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Endocytosis and Exocytosis These processes are used for materials that are too big to pass through the plasma membrane via protein transport. Endocytosis The process by which a cell engulfs material to bring it into the cell is called endocytosis. Two major forms of endocytosis described below. Phagocytosis Phagocytosis refers to the process of engulfing large particles. A vacuole is formed that contains the material that has been engulfed. Pinocytosis Pinocytosis refers to engulfing macromolecules. As in phagocytosis, a vesicle is formed which contains the molecules that were brought into the cell. Vacuoles and vesicles produced by phagocytosis and pinocytosis can fuse with lysosomes (lysosomes are vesicles that contain digestive enzymes). Phagocytosis and pinocytosis remove membrane from cell surface to form vacuoles that contain the engulfed material. Receptor-Mediated endocytosis Macromolecules bind to receptors on the surface of the cell. Receptors with bound
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

Endocytosis and Exocytosis - Endocytosis and Exocytosis...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online