Factors affecting cell membrane

Question 1

What are the two factors that affect cell membrane permeability

Answer 1

Temperature and solvent

Question 2

How does temperature affect cell membrane

Answer 2

As temperature increases the phospholipids will have more kinetic energy so they move faster making the bilateral less gel-like and more fluid

Question 3

Permeability of cell membrane below 0 degrees

Answer 3

Phospholipids are are packed closely together and the membrane is rigid .
Chanel and carrier proteins can denature which increase permeability and ice crystals can also form and pierce the membrane making it more permeable when it thaws

Question 4

Permeability of cell membrane between 0-45 degrees

Answer 4

Phospholipids can move freely and the membrane becomes partially permeable . As temperature increases the kinetic energy increases and makes the membrane more permeable

Question 5

Permeability above 45 degrees

Answer 5

The phospholipids start to melt and the membrane becomes more permeable . Water inside the cell expands putting pressure on the membrane .Channel proteins and carrier proteins in the membrane denature . This increases the permeability of the membrane