Leg Hemoglobin

Q.

With regard to the Biological Nitrogen Fixation by Rhizobium in association with soybean, which one of the following statement does not hold true.

1. Nitrogenase requires oxygen for its functioning.

2. Nitrogenase is Mo - Fe protein

3. Leg-hemoglobin is a pink coloured pigment.

4. Nitrogenase helps to convert N2 gas into two molecules of ammonia.

Q.

The enzyme that becomes inactive if Leg Haemoglobinis removed from the Leguminous plant is ----

1. Transaminase

2. Nitrogenase

3. Amylase

4. Nitrate reductase

Q.

The function of leghaemoglobin in the root nodules of legumes is:

1. Expression of nif gene

2. Inhibition of nitrogenase activity

3. Oxygen removal

4. Nodule differentiation