Molecules that can cross the blood-brain barrier are usually ...

[mynx]

Molecules that can cross the blood-brain barrier are usually ____.
 
  a. large, uncharged molecules, such as lactose
 b. large, charged molecules
 c. neurotransmitters, such as dopamine
 d. molecules that can dissolve in the fats of the capillary walls

Question 2

What happens to a virus that manages to cross the blood-brain barrier and enter the brain?
 
  a. It is quickly destroyed by natural killer cells.
 b. It gets trapped in a neuron, and then both are destroyed by natural killer cells.
  c. It gets trapped in a glial cell, and then both are destroyed by natural killer cells.
  d. It remains there and may cause negative effects several years later.

[aprice35067]

Answer to Question 1

d

Answer to Question 2

d

[mynx]

TYSM

[aliotak]

Excellent