Table of Contents
What is a membrane give an example?
The most common example is the phospholipid bilayer cell membrane that surrounds every cell in our bodies. Another example of a selectively permeable membrane is the inner membranes of an egg. All cells in our body are surrounded by a phospholipid bilayer.
What is membrane in simple words?
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.
What is does membrane mean?
A membrane is a thin layer of something. For an example of a membrane, you don’t have to look far: your skin is a kind of membrane. Membranes are thin and flexible, but usually still strong enough to protect what’s inside or underneath them. There are also membranes that don’t have anything to do with biology.
How do you use the word cell membrane in a sentence?
Cell-membrane sentence example
- They laid great stress on the nitrogenous nature of protoplasm, and noted that it preceded the formation of the cell-membrane.
- They are called phytoesterol and make up the cell membrane of certain plants.
What is a sentence of cell membrane?
Cell-membrane sentence example. They laid great stress on the nitrogenous nature of protoplasm, and noted that it preceded the formation of the cell-membrane. They are called phytoesterol and make up the cell membrane of certain plants.
What is a sentence for the word membrane?
1. The virus then passes through the cell membrane. 2. Loud noise can damage the delicate membrane in the ear.
What is a sentence for membrane?
Is skin a membrane?
The skin is an epithelial membrane also called the cutaneous membrane. It is a stratified squamous epithelial membrane resting on top of connective tissue.
What are mucous membranes?
Listen to pronunciation. (MYOO-kus MEM-brayn) The moist, inner lining of some organs and body cavities (such as the nose, mouth, lungs, and stomach). Glands in the mucous membrane make mucus (a thick, slippery fluid).
What does cell membrane mean in a sentence?
: a membrane of a cell especially : a semipermeable limiting layer of cell protoplasm consisting of a fluid phospholipid bilayer with intercalated proteins : plasma membrane Despite being much maligned in the popular press, cholesterol plays a crucial role in organizing cell membranes and controlling their physical …
What is an example of a plasma membrane?
The plasma membrane of cells acts as a semi-permeable membrane. If red blood cells, for example, are placed in water, the water crosses the membrane to make the amount of water on both sides of it equal (see diagram 3.7). This means that the water moves into the cell causing it to swell.
Where is the cell membrane located?
The cell membrane is located on the outside of an animal cell and just inside the cell wall in a plant cell . It is composed of phospholipids and embedded proteins.
What is the kids definition of cell membrane?
Kids Definition of cell membrane. : the thin outside layer that surrounds the cytoplasm of a cell and controls the movement of materials into and out of the cell.
What is a description of the plasma membrane?
A plasma membrane, by definition, is a fluid, phospholipid bilayer that separates the interior of all cells (prokaryotic, eukaryotic , animal and plant) from their external environment and plays a key role in many cellular processes. This membrane is what controls the movement of substances into and out of the cell,…