Cell Structure - EMS I | BIALIGY.com

About this video

• Video Title: Cell Structure - EMS I | BIALIGY.com
• Channel: BIALIGY
• Speakers: None listed
• Duration: 10:32

Overview

This video introduces the endomembrane system (EMS) as a key component of cell structure. It explains that the EMS compartmentalizes the cell into organelles and facilitates intracellular communication through mechanisms like vesicle budding. The video also defines cell membranes as lipid bilayers and discusses the role of the plasma membrane as a semi-permeable barrier, distinguishing it from a cell wall.

Key takeaways

• The endomembrane system (EMS) is a network of internal membranes within a cell that compartmentalizes organelles and enables intracellular communication.
• A cell membrane is defined as a lipid bilayer that separates the internal environment of a cell from the external environment and forms closed compartments.
• The EMS promotes intracellular communication through vesicle budding, where membrane-bound sacs transport materials between organelles.
• The plasma membrane, a component of the EMS, acts as a gatekeeper, regulating the passage of substances into and out of the cell, and is described as semi-permeable or selectively permeable.
• A cell wall is distinct from a cell membrane and is located outside the plasma membrane; it is present in some cells (like bacteria and plants) but not in others, and is not part of the EMS.