Amino acids in solution contain both a negative and positive ...

[olgavictoria]

Amino acids in solution contain both a negative and positive charge and thus are termed a(n)
 A) anion.
  B) cation.
  C) acid.
  D) base.
  E) zwitterion.

Question 2

If the pacemaker cells in the SA node become more permeable to potassium ions, the
 A) heart rate will increase.
  B) heart rate will decrease.
  C) cells will depolarize.
  D) cells will hyperpolarize.
  E) heart rate will decrease and cells will hyperpolarize.

[al]

Answer to Question 1

E

Answer to Question 2

E

[olgavictoria]

Both answers were spot on, thank you once again

[al]

Great! Please up vote