Inorganic Ions

Question 1

What is an Ion? and an inorganic ion?

Answer 1

its an atom that has an electric charge and iorganic ion is the one which doesn’t contain carbon

Question 2

Definition of cation

Answer 2

its an ion with a positive charge.

Question 3

Give 5 examples of cation

Answer 3

> Calcium (CA2+)
>Sodium (NA+)
>Potassium (K+)
>Hydrogen (H+)
>Ammonium (NH4+)

Question 4

2 Role of Calcium (Ca2)

Answer 4

> Involved in the transmission of nerve impulses and the release of insulin from the pancreas
Acts as a co-factors for many enzymes, e.g. those involved in blood clotting is important for bone formation.

Question 5

Role of sodium (Na+)

Answer 5

> Important for generating nerve impulses, for muscle contraction and regulation fluid balance in the body

Question 6

2 Role of Potassium (K+)

Answer 6

> Important for generating nerve impulses, for muscle contracting and for regulating fluid balance in the body
Activates essential enzymes needed for photosynthesis in plant cells.

Question 7

2 Role of Hydrogen (H+)

Answer 7

> Involved in regulation of blood pH

>Involved in respiration and photosynthesis

Question 8

Role of Ammonium (NH4+)

Answer 8

> its absorbed from the soil by plants and is important source of nitrogen, which is then used to make e.g. amino acids and nucleic acids

Question 9

Definition of Anions

Answer 9

Anions is an ion with a negative charge

Question 10

Give 5 examples of Anions

Answer 10

> Nitrate (NO3-)
> Hydrogencarbonate (HCO3-)
> Chloride (Cl-)
> Phosphate (PO4^3-)
> Hydroxide (OH-)

Question 11

Role of Nitrate (NO3-)

Answer 11

> Its absorbed from the soil by plants and is an important source of nitrogen, which is then used to make e.g. amino acids and nucleic acids

Question 12

Role of Hydrogencarbonate (HCO3-)

Answer 12

> Acts as a buffer, which helps to maintain pH of the blood

Question 13

3 Role of Chloride (Cl-)

Answer 13

> Involved in the ‘chloride shift’ which helps to maintain the pH of the blood during gas exchange
Acts as a cofactor for the enzyme amylase
involved in some nerve impulses

Question 14

2 Role of Phosphate (PO4^3-)

Answer 14

> Involved in photosynthesis and respirations reactions
Needed for the synthesis of many biological molecules, such as nucleotides, phospholipids and calcium phosphate (which strengthens bones)

Question 15

Role of Hydroxide (OH-)

Answer 15

> involved in regulation of blood pH