Grade 9 science cell (plasma) membrane

Front

What are the main components of the cell (plasma) membrane?

Back

Lipids and proteins.

Front

In a phospholipid, which part is hydrophobic?

Back

The lipid 'tails'.

Front

Where can proteins be found in a plasma membrane?

Back

All the above (integral, peripheral, and anchored proteins).

Front

What units are used to measure the width of a cell (plasma) membrane?

Back

Nanometres.

Front

What does the fluid mosaic model describe about cell (plasma) membranes?

Back

A plasma membrane is a mosaic of components that move freely and fluidly.

Front

What is the role of lipids in the cell (plasma) membrane?

Back

They form the bilayer that provides structural integrity and barrier properties.

Front

What is the function of proteins in the cell (plasma) membrane?

Back

They assist in transport, act as receptors, and provide structural support.

Front

What is a phospholipid?

Back

A molecule with a hydrophilic 'head' and two hydrophobic 'tails' that forms the bilayer of the plasma membrane.

Front

What is the significance of the term 'fluid' in the fluid mosaic model?

Back

It indicates that the components of the membrane can move laterally within the layer.

Front

What is the significance of the term 'mosaic' in the fluid mosaic model?

Back

It refers to the diverse array of proteins and lipids that make up the membrane.