Cell membrane - Wikipedia
网页The cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates and protects the interior of a cell from the outside environment (the extracellular space).
Cell membrane | Definition, Function, & Structure | Britannica
网页2024年8月23日 · Cell membrane, thin membrane that surrounds every living cell. The cell membrane functions as a barrier, keeping cell constituents in and unwanted substances out, and as a gate, allowing transport into the cell of essential nutrients and movement from the cell of waste products.
Cell Membrane - The Definitive Guide | Biology Dictionary
网页2020年10月19日 · The cell membrane, also known as the plasma membrane, is a double layer of lipids and proteins that surrounds a cell. It separates the cytoplasm (the contents of the cell) from the external environment. It is a feature of all cells, both prokaryotic and eukaryotic. a 3D diagram of the cell membrane.
3.1 The Cell Membrane – Anatomy & Physiology - Open …
网页The cell membrane is an extremely pliable structure composed primarily of two layers of phospholipids (a “bilayer”). Cholesterol and various proteins are also embedded within the membrane giving the membrane a variety of functions described below.
Cell Membranes | Learn Science at Scitable - Nature
网页Cell membranes protect and organize cells. All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in.
Membrane | Definition, Structure, & Functions | Britannica
网页2024年8月26日 · membrane, in biology, the thin layer that forms the outer boundary of a living cell or of an internal cell compartment. The outer boundary is the plasma membrane, and the compartments enclosed by internal membranes are called organelles.
Cell Membrane: Definition, Structure, & Functions with Diagram
网页2023年2月2日 · The cell membrane, also called the plasma membrane, is a thin layer that surrounds the cytoplasm of all prokaryotic and eukaryotic cells, including plant and animal cells.
6.3: Structure of the Cell Membrane - Biology LibreTexts
网页2022年7月31日 · Describe the structure of cell membranes; Identify components of the cell membrane, including phospholipids, cholesterol, proteins, and carbohydrates
Plasma Membrane - Definition, Structure, Functions - Biology …
网页2019年3月26日 · The plasma membrane of a cell is a network of lipids and proteins that forms the boundary between a cell’s contents and the outside of the cell. It is also simply called the cell membrane. The main function of the plasma membrane is to protect the cell from its surrounding environment.
The Cell Membrane - Structure - Function - TeachMePhysiology
网页2023年7月18日 · Cell membranes are an essential component of the cell, providing separation between the intracellular and extracellular environment. They are composed of lipids, proteins and carbohydrates.