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प्रश्न
Write the role of nitrogenase enzyme in nitrogen fixation?
उत्तर
Nitrogen fixation is the first step in the Nitrogen cycle, during which gaseous nitrogen from the atmosphere is fixed. It required nitrogenase enzyme complex nitrogenase is active only in anaerobic conditions. To create this anaerobic condition, a pigment known as leghaemoglobin is synthesized in the nodules which acts as oxygen scavenger and remove oxygen.
संबंधित प्रश्न
Draw diagram of Nitrogen cycle.
Name four types of bacteria involved in nitrogen cycle.
Describe nitrogen cycle.
Very Short Answer Question:
What is denitrification?
Long Answer Question:
Explain biological nitrogen fixation with example.
Which of the following is TRUE regarding Rhizobium?
Which free living microorganism helps in nitrogen fixation?
The process of nitrogen-fixation by bacteria does not take place in the presence of
The nitrogen molecules present in the air can be converted into nitrates and nitrites by
Why should we avoid standing dose to a tuberculosis patient while he/she is coughing?
Match Column - I with Column - II.
| Column - I | Column - II | ||
| (a) | Nitrococcus | (i) | Denitrification |
| (b) | Rhizobium | (ii) | Conversion of ammonia to nitrite |
| (c) | Thiobacillus | (iii) | Conversion of nitrite to nitrate |
| (d) | Nitrobacter | (iv) | Conversion of atmospheric nitrogen to ammonia |
Choose the correct answer from the options given below.
______ is the primary nutrient, important for the survival of all living organisms.
The atmosphere is a rich source of ______.
Draw a neat flow chart of the Nitrogen cycle. Briefly explain the various processes involved in the nitrogen cycle.
What is nitrification?
Name any two nitrifying bacteria in soil.
Which of the following statement is incorrect with regard to combustion?
Match column I with Column II.
| Column I | Column II |
| A Acidic | (i) Phenylalanine (Phe) |
| B Neutral | (ii) Cysteine (Cys) |
| C Aromatic | (iii) Valine (Val) |
| D S(Sulphur) containing | (iv) Asparagine (Asn) |
Select the correct answer from the options given below.
Match the following:
| Column A | Column B (Organisms) | ||
| (1) | Symbiotic nitrogen fixation | (a) | Nitrobacter |
| (2) | Denitrification | (b) | Cyanobacteria |
| (3) | Free living nitrogen fixers | (c) | Rhizobium |
| (4) | Nitrification | (d) | Paracoccus |
