5.2 Factors affecting membrane structure Flashcards
1
Q
How does temperature affect plasma membranes?
A
When temp. rises, phospholipids have more kinetic energy so vibrate more.
This makes the membrane fluid, losing its structure.
2
Q
Why is it easier for molecules to pass through plasma membrane at high temperatures?
A
Membrane becomes more fluid, so have increased permeability
3
Q
In relation to proteins, how else will high temperatures affect membrane permeability?
A
Carrier proteins + channel proteins, involved in transport across membranes, will denature
4
Q
How do organic solvents affect membranes?
A
Dissolve membranes
