Q. No.A microbially facilitated process of dissimilatory nitrate reduction that may ultimately produce molecular nitrogen () through a series of intermediate gaseous nitrogen oxide products is called as:
1. Nitrogen assimilation
2. Denitrification
3. Nitrification
4. Nitratification
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
For biological fixation of one molecule of nitrogen into two molecules of ammonia, the number of ATP molecules needed is:
| 1. 4 | 2. 8 |
| 3. 12 | 4. 16 |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
In plants, ammonia reacts with alpha ketoglutaric acid to form glutamic acid in a process called as:
| 1. Deamination | 2. Reductive amination |
| 3. Transamination | 4. Aminoacylation |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Name the amino acid from which 17 other amino acids are formed by transamination in plants?
| 1. Glycine | 2. Lysine |
| 3. Tryptophan | 4. Glutamic acid |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which one of the following statements can best explain the term critical concentration of an essential element?
1. Essential element concentration below which plant growth is retarded.
2. Essential element concentration below which plant growth becomes stunted.
3. Essential element concentration below which plant remains in the vegetative phase.
4. None of the above
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Reaction carried out by fixing microbes include
(i) 2NH3 + 3O2 \(\rightarrow\) \(2NO_2^-\) + 2H+ + 2H2O
(ii) \(2NO_2^-\) + O2 \(\rightarrow\) 2NO3
Select the false statement:
1. (i) is carried out by Nitrosomonas or Nitrococcus
2. (ii) is carried out by Nitrobacter
3. Both (i) and (ii) can be called nitrification
4. Bacteria carrying out (i) and (ii) are usually photoautotrophs
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
With regard to the Biological Nitrogen Fixation by Rhizobium in association with soyabean, which one of the following statement/statements does not hold true?
1. Nitrogenase may require oxygen for its functioning .
2. Nitrogenase is MO-Fe protein.
3. Leg-hemoglobin is a pink coloured pigment.
4. Nitrogenase helps to convert gas into two molecules of ammonia.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Match the element with its associated functions/roles and choose the correct option among given below:
|
A. Boron |
i. Splitting of H2O to liberate O2 during photosynthesis |
|
B. Manganese |
ii. Needed for synthesis of auxins |
|
C. Molybdenum |
iii. Component of nitrogenase |
|
D. Zinc |
iv. Pollen germination |
|
E. Iron |
v. Component of ferredoxin |
Options:
| A | B | C | D | E | |
| 1. | i | ii | iii | iv | v |
| 2. | iv | i | iii | ii | v |
| 3. | iii | ii | iv | v | i |
| 4. | ii | iii | v | i | iv |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Plants can be grown in (Select the incorrect option)
1. Soil with essential nutrients
2. Water with essential nutrients
3. Either water or soil with essential nutrients
4. Water or soil without essential nutrients
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Identify the incorrectly matched co-factor in Column I with enzymes in Column II:
|
COLUMN I |
COLUMN II |
|
|
1. |
Zinc |
Alcohol dehydrogenase |
|
2. |
Magnesium |
Cytochrome oxidase |
|
3. |
Molybdenum |
Nitrate reductase |
|
4. |
Iron |
Nitrogenase |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
© 2024 GoodEd Technologies Pvt. Ltd.