Plasma Membrane and Tonicity

Front

What is the primary function of proteins embedded in the plasma membrane?

Back

Proteins help substances pass through the plasma membrane, facilitating transport and communication.

Front

What is the hydrophilic portion of the plasma membrane?

Back

The hydrophilic portion refers to the phosphate heads of phospholipids that can mix with water.

Front

What is the structure of the plasma membrane primarily composed of?

Back

The plasma membrane is primarily composed of a phospholipid bilayer.

Front

What role does cholesterol play in the plasma membrane?

Back

Cholesterol helps to stabilize the fluidity of the plasma membrane.

Front

What are carbohydrates' functions in the plasma membrane?

Back

Carbohydrates serve as recognition sites for cell signaling and communication.

Front

What is the term for the double layer of phospholipids in the plasma membrane?

Back

Phospholipid bilayer.

Front

Which component is NOT part of the plasma membrane?

Back

Nucleotide.

Front

What is the difference between integral and peripheral proteins?

Back

Integral proteins span the membrane, while peripheral proteins are attached to the surface.

Front

What does 'tonicity' refer to in relation to cells?

Back

Tonicity refers to the ability of a solution to affect the shape of cells by altering their internal water content.

Front

What happens to a cell in a hypertonic solution?

Back

A cell in a hypertonic solution will lose water and shrink.