1.3 Membrane structure

Question 1

Phospholipid Bilayer:

Answer 1

Phospholipids form bilayers in water due to the amphipathic properties of phospholipid molecules

Question 2

Phospholipid definition

Answer 2

provide barriers in cellular membranes to protect the cell, and they make barriers for the organelles within those cells.

Phospholipids work to provide pathways for various substances across membranes

Question 3

arrengement in membranes

Answer 3

Phospholipids spontaneously arrange into a bilayer

The hydrophobic tail regions face inwards and are shielded from the surrounding polar fluids, while the two hydrophilic head regions associate with the cytosolic and extracellular fluids respectively