Which of the following statements is INCORRECT regarding the nitrogenase enzyme complex?
It requires ATP.
It is a metalloenzyme containing iron and molybdenum.
It is insensitive to oxygen.
It catalyzes the reduction of N2 to NH3.
Related Questions
Enzymes involved in nitrogen metabolism is
Phosphoenol pyruvate carboxylase
Ribulose bisphosphate carboxylase oxygenase
Nitrogenase
Alcohol dehydrogenase
Which of the following gene clusters in bacteria is responsible for nitrogen fixtion?
Nod, nif, fix
Nod, ndf, nfx
Nod, nix, nfx
Ndx, nif, fix
Select the mismatch:
Rhizobium - Alfalfa
Frankia - Alnus
Rhodospirillum - Mycorrhiza
Anabaena - Nitrogen fixer
Nitrogen fixation is facilitated by?
Cu
B
Zn
MO
For the existence of nitrogen, how many nitrogen atoms are required?
Three
Two
Four
One
Which of the following is NOT a biological process in the nitrogen cycle?
Nitrogen fixation
Nitrification
Denitrification
Lightning
The free energy change () for nitrogen fixation is highly positive. Which of the following BEST explains how biological nitrogen fixation occurs despite this energetic barrier?
The reaction proceeds spontaneously at high temperatures found in root nodules
Nitrogenase acts as a catalyst, lowering the activation energy but not the
Hydrolysis of a large number of ATP molecules coupled to the reaction
The presence of leghemoglobin alters the thermodynamics, making negative
Nitrogen is required mainly by which of the following parts of the plants?
I. Meristematic tissues
II. Differentiating tissues
III. Apical tissues
IV. Metabolically active cell
Choose the correct option
Only II
Only I
I and II
I and IV
Enzyme involved in nitrogen fixation?
Nitrogenase
Nitrate reductase
Transferase
Transaminase
Which of the following symbiotic nitrogen-fixing organisms is associated with non-leguminous plants like Alnus?
Rhizobium
Azotobacter
Frankia
Mycorrhiza
