2.1.2p Ions

Question 1

Ca 2+

Answer 1

used in nervous impulse transmission and muscle contraction

Question 2

Na+

Answer 2

maintenance of normal cellular homeostasis and in the regulation of fluid and electrolyte balance and blood pressure

Question 3

K+

Answer 3

help maintain normal levels of fluid inside our cells

Question 4

H+

Answer 4

help control pH in digestion

Question 5

NH4+

Answer 5

Free ammonium ions are produced and consumed during cell metabolism

Question 6

NO3-

Answer 6

important mediator of blood flow regulation, cell signaling, energetics and tissue responses to hypoxia

Question 7

HCO3-

Answer 7

Krebs cycle, whole-body and cellular pH regulation, and volume regulation

Question 8

Cl-

Answer 8

helps to regulate the amount of fluid and types of nutrients going in and out of the cells

Question 9

PO4 3-

Answer 9

important component of the lipid bilayer of cell membranes, DNA, RNA, and proteins

Question 10

OH-

Answer 10

a base, a ligand, a nucleophile, and a catalyst