Hemoglobin

Question 1

What are the two parts of hemoglobin?

Answer 1

Heme → iron
Globin → protein

Question 2

What are the types of hemoglobin?

Answer 2

Hemoglobin A
Hemoglobin A2
Fetal hemoglobin

Question 3

What is hemoglobin A?

Answer 3

The globin part is two a chains, each of which contains 141 amino acid residues and two B chains, each of which contains 146 amino aid residues

Question 4

What is hemoglobin A2?

Answer 4

The B chains are replaced by sigma chains

Question 5

What is fetal hemoglobin?

Answer 5

B chains are replaced by gama chains

Question 6

What does reactions of hemoglobin include?

Answer 6

Oxyhemoglobin
Reduced hemoglobin
Methemoglobin
Carbon monoxyhemoglobein

Question 7

What is methemoglobin?

Answer 7

When the ferrous iron is converted to ferric iron forming methemoglobin, which is dark-coloured

Question 8

What causes dusky discoloration of the skin?

Answer 8

Methemoglobin present in large quantities in the circulation