Membranes & transport - glycolipids & glycoproteins

Question 1

What are glycoproteins?

Answer 1

Cell membrane proteins that have a carbohydrate chain attached on the extracellular side

Extracellular refers to the area outside cells.

Question 2

What are glycolipids?

Answer 2

Lipids with carbohydrate chains attached, located on the outer surface of cell membranes

Glycolipids contribute to the structure and function of cell membranes.

Question 3

What is the main function of glycoproteins and glycolipids?

Answer 3

To act as receptor molecules that bind with substances at the cell surface.

Question 4

What types of receptors are included in glycoproteins and glycolipids?

Answer 4

• Signalling receptors that bind to hormones and neurotransmitters
• Receptors involved in endocytosis
• Receptors involved in cell adhesion and stabilization.

Question 5

What is the role of cell adhesion in tissues?

Answer 5

Allows cells to attach to each other to form tissues.

Question 6

What function do some glycoproteins and glycolipids serve as cell markers?

Answer 6

They act as antigens for cell identification.

Question 7

True or False: Glycoproteins and glycolipids help the immune system determine if a cell is a pathogen.

Answer 7

True.

Question 8

Fill in the blank: Glycoproteins and glycolipids enable cells to _______ with substances at the cell surface.

Answer 8

[bind]