Nodule formation is a result of

(1) Division and growth of cortical cells

(2) Division and growth of pericycle cells

(3) Division and growth of endodermal cells

(4) Both A and B

Subtopic:  Nitrogen Fixation |
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To produce two molecules of ammonia, how many ATP are hydrolysed?

(1) 16

(2) 8

(3) 4

(4) 32

Subtopic:  Nitrogen Fixation | Nitrogen Metabolism: 1 | Nitrogen metabolism |
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Enzyme Nitrogenase is

(1) Highly sensitive to the molecular oxygen

(2) Least sensitive to the molecular oxygen

(3) Highly sensitive to carbon dioxide

(4) Least active enzyme

Subtopic:  Nitrogen Fixation | Nitrogen Metabolism: 1 | Nitrogen Metabolism:2 | Nitrogen metabolism | Nitrogen Metabolism |
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To protect nitrogenase from oxygen, which of the following in nodule will act as scavenger

(1) Leg-haemoglobin

(2) Anaerobic mode of life

(3) Both 1. and 2.

(4) Myoglobin

Subtopic:  Nitrogen Fixation | Nitrogen Metabolism: 1 | Nitrogen Metabolism:2 | Nitrogen metabolism | Nitrogen Metabolism |
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The nitrogen fixing bacteria are

(1) Always free living

(2) Generally free living aerobes but during nitrogen fixing event it becomes anaerobic

(3) Always anaerobic

(4) Generally anaerobic but under nitrogen fixing event, it becomes aerobic

Subtopic:  Nitrogen Fixation | Nitrogen Metabolism: 1 | Nitrogen Metabolism:2 | Nitrogen metabolism | Nitrogen Metabolism |
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The energy required, for the process of nitrogen metabolism comes from

(1) Respiration of the host cells

(2) Oxidation of the host cells

(3) Respiration of the bacterial cells

(4) Oxidation of the bacterial cells

Subtopic:  Nitrogen Fixation | Nitrogen Metabolism: 1 | Nitrogen Metabolism:2 | Nitrogen metabolism | Nitrogen Metabolism |
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Ammonium is used to synthesise amino acids in plants which of the following is not a way?

(1) Reductive Amination

(2) Transamination

(3) Oxidative amination

(4) All of these

Subtopic:  Nitrogen Metabolism: 1 | Nitrogen Metabolism:2 | Nitrogen metabolism | Nitrogen Metabolism |
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Reductive animation is

(1) Conversion of ammonia to alpha ketoglutarate and forms glutamate

(2) Ammonia reacts with alpha ketoglutarate and forms glutamate

(3) Ammonia reacts with glutamate and forms alpha-ketoglutaric acid

(4) Conversion of ammonia to glutamate

Subtopic:  Nitrogen Metabolism: 1 | Nitrogen Metabolism:2 | Nitrogen metabolism | Nitrogen Metabolism |
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Which of the following is an ezyme of reductive animation?

(1) Glutamate oxidase

(2) Glutamate dehydrogenase

(3) Glutamate carboxylase

(4) Aspartate oxidase

Subtopic:  Nitrogen Metabolism: 1 | Nitrogen Metabolism:2 | Nitrogen metabolism | Nitrogen Metabolism |
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During reductive animation

(1) NADH gets converted to NAD+

(2) NADPH gets converted to NADP

(3) NADP gets converted to NADPH

(4) NAD+ gets converted to NADH

Subtopic:  Nitrogen Metabolism: 1 | Nitrogen Metabolism:2 | Nitrogen metabolism | Nitrogen Metabolism |
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