cell- (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals semipermeable membrane- a membrane (as a cell membrane) that allows some molecules to pass ...
Define Cell (biology). Cell (biology) synonyms, Cell (biology) pronunciation, Cell (biology) translation, English dictionary definition of Cell (biology). adj. 1. Situated or occurring within a cell: subcellular organelles. 2. Smaller in size than ordina
in Biology, and a K-12 Principal Certification Program. Corsini has experience as a high school Life, Earth, Biology, Ecology, and Physical Science teacher. Short Summary Let's review. All living cells contain a cell membrane. The cell membrane is the semi-permeable structure that surrounds ...
membrane in the Biology topic by Longman Dictionary of Contemporary English | LDOCE | What you need to know about Biology: words, phrases and expressions | Biology
Figure 1: Structure of the plasma membrane. Image Source: Maria Victoria Gonzaga ofBiology Online. Plasma membrane vs. cell membrane As already pointed out, the cell membrane is the plasma membrane surrounding the cell. The term“plasma membrane”also includes the biological membranes that form the...
A cell membrane is the thin, fragile and outermost barrier that separates the internal contents of a cell from the external.
Learn about the purpose of the cell membrane. Explore the parts of a cell membrane to understand how the cell membrane's structure is made and...
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 th
Biology definition:Acell wallis a structural layer next to thecell membranewith the primary role of giving the cell rigidity and protection from mechanical stress. Its main function is to give the cell rigidity, strength, and protection against mechanical stress. Examples of organisms with cell wall...
Essentially, the plasma membrane refers to the cell membrane that defines the boundaries of a cell and cell organelles. As such, it forms a barrier, with controlled interaction, between two aqueous compartments; between the intracellular and intracellular environments. ...