Cell Membrane Definition Quizlet

This lesson will help you: While the terms cell membrane and plasma membrane are used interchangeably in some books, there is a slight difference between the two. The term cell membrane refers to the boundary of the cell as a whole, the term plasma membrane refers to the boundary of the cell or that of an organelle within the cell.

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Formation of a multicellular organism starts with a small collection of similar cells in an embryo and proceeds by continuous cell division and specialization to produce an entire community of cooperating cells, each with its own role in the life of the organism.

Cell membrane definition quizlet. Cell membrane synonyms, cell membrane pronunciation, cell membrane translation, english dictionary definition of cell membrane. A cell containing a nucleus and other membrane bound organelles. The cell membrane is what's on the outside of a cell.

This is the currently selected item. The pocket part of the cell membrane then pinches off of the cell membrane, which is now called a vesicle. When an extracellular solution has the same concentration of solute as that inside the cell, the solution is termed an isotonic solution.

A genetic mutation in a cell causes the cell to produce a cell membrane that does not have any transport proteins. The plasma membrane uses the proteins embedded in its lipid bilayer to allow or block materials from entering the cell. Its function is to protect the integrity of the interior of the cell by allowing certain substances into the cell while keeping other substances out.

Facilitated diffusion transport of substances across a biological membrane from an area of higher concentration to an area of lower concentration by means of a carrier molecule. The semipermeable membrane that encloses the cytoplasm of a cell. It is made up of proteins and lipids and often contains molecular receptors.

A cell that lacks a nucleus and other membrane bound organelles; 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. Through cell cooperation, the organism becomes much more than the sum of its component parts.

When a cell is placed in an isotonic solution, no movement of water occurs across the cell membrane. Cells exclude some substances, take in others, and excrete still others, all in controlled quantities. A cell’s plasma membrane defines the boundary of the cell and determines the nature of its contact with the environment.