The inside of a cell is a
1. reducing medium
2. oxidising medium
3. neutral medium
4. None of these
O2 binding in Hb is
1. pH dependent
2. pH independent
3. O2 binds at neutral pH
4. None of these
Release of O2 from oxyhaemoglobin is favoured by
1. high pH and low CO2 conc
2. low pH and low CO2 conc
3. high pH and high CO2 conc
4. low pH and high conc. of CO2
Nitrogenase enzyme contains
1. Fe-S protein
2. Mo-Fe-S protein
3. Both 1 and 2
4. None of the above
The biological role of Cytochrome P-450 is
1. Nitrogen fixation
2. Oxidation of RH to ROH
3. Amide hydrolysis
4. Oxidation of amino acid.
Myoglobin is a
1. Catalyst for epoxidation reaction
2. Component in a photosynthetic system
3. Nitrogen fixation enzyme
4. Di-oxygen binding metalloprotein
The metal that is not prevalent in the biological system is
1. Platinum
2. Manganese
3. Cobalt
4. Nickel
Hemerythrin belongs to the group of
1. Non-heme iron protein
2. Binuclear copper protein
3. Heme-iron protein
4. None of these.
Which of the following metalloproteins does not have iron in the active site?
1. Hemoglobin
2. Hemerythrin
3. Hemocyanin
4. Cytochrome c
Which of the following is a heme iron protein?
1. Rubredoxin
2. Transferrin
3. Hemerythrin
4. Cytochrome c