3.1.8 Inorganic ions

Question 1

What are the four inorganic ions in the body?

Answer 1

Iron(Fe^2+) Phosphate (PO4^3-) Hydrogen (H+) Sodium (Na+)

Question 2

What is Iron’s role in the body?

Answer 2

Found in haemoglobin and plays a role in oxygen transport

Question 3

What is Phosphate’s role in the body?

Answer 3

Forms structural role in DNA and storage energy in ATP

Question 4

What is Hydrogen’s role in the body?

Answer 4

To determine the pH of solutions (H+ ions interact with H-bond and ionic bonds in tertiary structure of proteins which can cause them to denature)

Question 5

What is Sodium’s role in the body?

Answer 5

Important in transport of glucose/amino acids across plasma membranes

Question 6

Acid- proton donor or acceptor?

Answer 6

Proton donor

Question 7

Base- proton donor or acceptor?

Answer 7

Proton acceptor

Question 8

What are inorganic ions and where are they found in the body?

Answer 8

Ions that do not contain carbon atoms.
● Found in cytoplasm & extracellular
fluid.
● May be in high or very low
concentrations.

Question 9

What is the formula for pH?

Answer 9

-log^10(H+ conc)

Question 10

Calculate the pH for a solution containing 0.1 moldm^-3 HCL

Answer 10

-log(0.1)=1

Question 11

Calculate the pH of a solution containing 0.005 moldm^-3 H^2SO4

Answer 11

0.005=1 mol
H^2= 0.005 x 2= 0.01
-log(0.01)=2