What is the function of a cell’s selectively permeable plasma membrane? C) It regulates what materials enter and leave the cell.
Selective permeability is the cellular membranes property that only allows certain molecules to enter or exit the cell. In other words it regulates what materials enter and leave the cell. The cell membrane is a biological membrane that separates the interior of all cells from the outside environment. All of this is depend on the molecule size and the concentrations on either side of the membrane
A selectively permeable cell membrane is one that allows certain molecules or ions to pass through it by active or passive transport.
Active transport is require the cell to expend energy to move the materials, whereas the passive transport can done without using cellular energy.
The advantage of selectively permeable plasma membrane is the bigger and toxic molecules which might be potentially very harmful for the cell can be prevented from entering the cell All of this is dependent on the size of the molecule and the concentrations on either side of the membrane
Grade: 9
Subject: Biology
Chapter: plasma
Keywords: plasma membrane, proteins, ATP, materials, cell
The plasma membrane is selectively permeable and regulates the movement of molecules from intracellular spaces to the extracellular spaces.
Further Explanation:
The plasma membrane is also referred to as the cell membrane. It is present in all the eukaryotes and prokaryotes. Some bacteria and plant cell membrane is attached to the cell wall. The plasma membrane is a semi-permeable lipid bilayer.
Plasma membrane plays several functions in the cell, for example:
• They protect the cell.
• Give a fixed environment in the cell
• Transport toxic substance outside the cell
• Help in cell signaling
• Give structural support to the cell
• Transport molecule inside to outside and vice versa.
The plasma membrane is mainly made up of lipids which help to transport molecule. This is because lipid makes cell membrane semi-permeable. They act as a barrier between the environment and the cell. The plasma membrane also made up of proteins and carbohydrates that help in cell signaling.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Membrane transport
Keywords: Cell, molecule, plasma membrane, cell signaling, transport, molecule,semi-permeable, function, lipid bilayer, lipids, barrier, protein, carbohydrate.
