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Definitions from WordNet

Definitions from the Web

Plasma Membrane

The plasma membrane, also known as the cell membrane, is a vital component of all living cells. It acts as a protective barrier, separating the cell from its external environment.

Definition

The plasma membrane is a thin, semi-permeable structure that encloses the contents of a cell and regulates the flow of substances in and out of the cell.

Senses

Sense 1:

In biology, the plasma membrane refers to the outer boundary of a cell that acts as a selective barrier.

Sense 2:

In physics, the plasma membrane refers to a thin layer of plasma or ionized gas that surrounds an object in a vacuum or a high-temperature environment.

Sample Sentences

Sense 1:

1. The plasma membrane controls the exchange of nutrients and waste materials between the cell and its surroundings.
2. Damage to the plasma membrane can compromise the integrity and functionality of the cell.
3. Proteins embedded in the plasma membrane play a crucial role in cell signaling and communication.

Sense 2:

1. The plasma membrane surrounding the spacecraft protects it from the extreme temperatures and conditions of space.
2. Plasma membranes are commonly used in scientific experiments for their unique properties.
3. The behavior of plasma membranes can be studied to better understand fusion and plasma physics.

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