Inorganic Ions

Question 1

What is the difference between a cation and anions?

Answer 1

Cations have a positive charge and anions have a negative charge.

Question 2

What is a use for Ca 2+

Answer 2

-Nerve impulses.
-Muscle contractions.

Question 3

What is a use for Na+

Answer 3

-Nerve impulses
-Kidney function
-Transporting substances in co-transport.

Question 4

What is a use for K+ ions?

Answer 4

-Nerve impulses
-Stomata

Question 5

What is a use for H+ ions?

Answer 5

-Catalysts
-PH determination

Question 6

What is a use for NH 4+ ions?

Answer 6

Makes nitrate ions.

Question 7

What is a use for NO3- ions?

Answer 7

Ammino acid formation.

Question 8

What element do ions not contain?

Answer 8

Carbon.

Question 9

What is a use for HCO3- ions?

Answer 9

Maintain blood PH.

Question 10

What is a use for Cl- ions?

Answer 10

-Balance sodium and potassium ions in cells.

Question 11

What is a use for PO4 3- ions?

Answer 11

-Cell membranes.
-Nucleic acids and ATP formation.
-Bone formation.

Question 12

What is a use for OH- ions?

Answer 12

-Catalysts
-PH determination

Question 13

How does iron ions play a role in haemoglobin?

Answer 13

-Carries oxygen.
-Haemoglobin is made of 4 polypeptide chains and each one has and Fe 2+ ion.
-When oxygen binds it becomes Fe 3+ until the oxygen is released.