Hemoglobin

Hemoglobin contains two parts ______ and ________.

• iron and porphyrin

• iron and porphine

• heme and globin
• protein and iron

Hemoglobin is found in _________.

• platelets
• erythrocytes

• red blood cells

• plasma

Human blood is red due to the

Each hemoglobin molecule is made up of ................ subunits

Fifth coordination site in deoxyhemoglobin is occupied by

Sixth coordination site in deoxyhemoglobin is

In deoxyhemoglobin, the spin and oxidation state of iron is

• +3, low spin
• +1, high spin
• +2, high spin
• +2, low spin

The geometry of the heme group in deoxyhemoglobin is

• trigonal pyramidal

• square pyramidal

• planar

• octahedral

Magnetic nature of Fe in oxyhemoglobin is

• paramagnetic
• antiferromagnetic
• ferromagnetic
• diamagnetic

Spin and oxidation state of iron in oxyhemoglobin is

• +3, low spin
• +1, high spin
• +2, low spin
• +2, high spin