Membrane - Wikipedia
网页A membrane is a selective barrier; it allows some things to pass through but stops others. Such things may be molecules, ions, or other small particles. Membranes can be generally classified into synthetic membranes and biological membranes. [1] .
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 - 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).
MEMBRANE中文(简体)翻译：剑桥词典 - Cambridge Dictionary
网页membrane. noun [ C or U ] specialized us uk / ˈmem.breɪn /. Add to word list. anatomy. a thin piece of skin that covers or connects parts of a person's or animal's body. 膜. The …
Cell membrane | Definition, Function, & Structure | Britannica
网页2024年8月23日 · cell membrane, thin membrane that surrounds every living cell, delimiting the cell from the environment around it. Enclosed by this cell membrane (also known as the plasma membrane) are the cell’s constituents, often large, water-soluble, highly charged molecules such as proteins, nucleic acids, carbohydrates, and substances involved in ...
Biological Membranes – Fundamentals of Cell Biology
网页Learning Goals. List the four primary features of a biological membrane and explain why they are important for cellular function. Explain how the chemical composition of a membrane (including lipids, carbohydrates, and proteins) contributes to its function. Explain how thermodynamics and the hydrophobic effect hold membranes together.
3.1 The Cell Membrane – Anatomy & Physiology - Open …
网页Just as the outer layer of your skin separates your body from its environment, the cell membrane (also known as the plasma membrane) separates the inner contents of a cell from its exterior environment. This cell membrane provides a protective barrier around the cell and regulates which materials can pass in or out.
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. Unlike...
3.1 The Cell Membrane - Anatomy and Physiology 2e - OpenStax
网页Despite differences in structure and function, all living cells in multicellular organisms have a surrounding cell membrane. As the outer layer of your skin separates your body from its environment, the cell membrane (also known as the plasma membrane) separates the inner contents of a cell from its exterior environment.
Cell membrane: Video, Anatomy, Definition & Function - Osmosis
网页The cell membrane is an important structural element of the building block of life - the cell. Its main role is to define what’s inside - the intracellular space - and what’s outside - the extracellular space. It also regulates what comes in or out of the cell - that’s called selective permeability. The cell membrane is basically made up ...