Multiple choice

Match the following Fe containing proteins with the corresponding function and oxidation state of Fe.

   
Fe containing proteins
Function
Oxidation state of Fe
P. Haemoglobin i. Plasma O2 transport a. 2
Q. Myoglobin ii. Muscle O2 storage b. 3
R. Transferrin iii. Plasma Fe transport
S. Catalase iv. H2O2 metabolism

  1. P - ii - a, Q - iv - b, R - i - b, S - iii - b

  2. P - iii - a, Q - iv - a, R - ii - b, S - i - b

  3. P - i - a, Q - ii - a, R - iii - b, S - iv - a

  4. P - ii - b, Q - iii - b, R - iv - a, S - i - a

  5. P - i - b, Q - iii - b, R - ii - a, S - iv - b
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct answer. Haemoglobin is a plasma O2 transport protein. Oxidation number of Fe in haemoglobin is 2. Myoglobin is a muscle O2 storage protein. Oxidation number of Fe in myoglobin is 2. Transferrin is a plasma Fe transport protein. Oxidation number of Fe in transferrin is 3. Catalase is an enzyme, which catalyses H2O2 metabolism. Oxidation number of Fe in catalase is 2.

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