Membranes (easy)

Question 1

Describe facilitated diffusion [2] (in context of fatty acids)

Answer 1

1. Via channel protein
2. Down a concentration gradient
3. Passive - no ATP required

Question 2

Explain why transport of X requires a transport protein

Answer 2

1. X is hydrophilic / too large to enter transient pores
2. Requires specific transport protein that provides hydrophilic pore
3. Membrane has a hydrophobic core