CELL BIOLOGY: 1.3 Membrane Structure

Question 1

Plasma Membrane

Answer 1

• Plasma membrane → phospholipid bilayer embedded with proteins (fluid mosaic model)
• Function → physical barrier between the external environment and the inner cell organelles
• Plasma membrane: semi-permeable membrane, which permits the movement of only certain molecules both in and out the cell

Question 2

Phospholipid Bilayer