3. inorganic ions

Question 1

whats the role of ….. in biology

Ca2+

Answer 1

*transmission of nerve impulses
* the release of insulin from the pancreas.
* a cofactor for many enzymes eg. those used in blood clotting
* bone formation

Question 2

whats the role of ….. in biology

Na+

Answer 2

• generating nerve impulses
• muscle contractions
• regulataing fluid balance

Question 3

whats the role of ….. in biology

K+

Answer 3

• generating nerve impulsesmuscle contraction
• reglating fluid balance
• activates essential enzymes needed for photosynthesis

Question 4

whats the role of ….. in biology

H+

Answer 4

• decreases ph
• photosynthesis reactions that ocur in chloroplast

Question 5

whats the role of ….. in biology

NH4+

Answer 5

• absorbed from soil by plants as source of nitrogen to make amino acids and nucleic acids

Question 6

whats the role of ….. in biology

NO3-

Answer 6

• absorbed from soil by plants as source of nitrogen to make amino acids and nucleic acids

Question 7

whats the role of ….. in biology

HCO3-

Answer 7

• acts as a buffer to maintain ph of the blood

Question 8

whats the role of ….. in biology

Cl-

Answer 8

• involved in the chloride shift to maintain blood Ph
• cofactor for the amylase enzyme
• some nerve impulses

Question 9

whats the role of ….. in biology

PO4 3-

Answer 9

• involved in photosynthesis and and respitation reactions
  needes for synthesis of nucleotides ,phospholipids and calcium phosphate