Plasma Membrane

Front

What type of cells have a cell membrane?

Back

All cells have a cell membrane.

Front

What is the primary structure of the cell membrane?

Back

The cell membrane is composed of a phospholipid bilayer.

Front

What does it mean for a membrane to be selectively permeable?

Back

It means that some molecules can cross the membrane while others cannot.

Front

Where would you most likely find water molecules in relation to the plasma membrane?

Back

Water molecules can be found in areas A and C.

Front

Which of the following is not a structural part of the cell membrane?

Back

DNA is not a structural part of the cell membrane.

Front

What are phospholipids?

Back

Phospholipids are molecules that make up the cell membrane, consisting of a hydrophilic (water-attracting) head and two hydrophobic (water-repelling) tails.

Front

What role do proteins play in the plasma membrane?

Back

Proteins in the plasma membrane assist in transport, act as receptors, and provide structural support.

Front

What is the function of cholesterol in the cell membrane?

Back

Cholesterol helps to stabilize the fluidity of the cell membrane.

Front

What is the fluid mosaic model?

Back

The fluid mosaic model describes the structure of the plasma membrane as a mosaic of various components (lipids, proteins, carbohydrates) that move freely within the layer.

Front

What are integral proteins?

Back

Integral proteins are proteins that are embedded within the lipid bilayer and can span across the membrane.