What role does denitrification play in the nitrogen cycle? -Biology

What role does denitrification play in the nitrogen cycle? -Biology
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Microbial degradation of nitrates into atmospheric nitrogen is known as- (1) Ammonification (2) Nitrification (3) Denitrification (4) Putrefaction

Description : Microbial degradation of nitrates into atmospheric nitrogen is known as- (1) Ammonification (2) Nitrification (3) Denitrification (4) Putrefaction

Last Answer : (3) Denitrification Explanation: Denitrification is the biological conversion of nitrate to nitrogen gas, nitric oxide or nitrous oxide. It refers to nitrate reduction by bacterial species such as ... (N2). These bacteria use nitrate as an electron acceptor instead of oxygen during respiration.

Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere? (a) Aerobic nitrate oxidation and nitrite reduction (b) Decomposition of organic nitrogen and conversion of dinitrogen to ammonium compounds (c) Enteric fermentation in cattle and nitrogen fixation by Rhizobium in root nodules of legumes (d) Anaerobic ammonium oxidation and denitrification

Description : Which two distinct microbial processes are responsible for the release of fixed nitrogen as dinitrogen gas (N2) to the atmosphere? (a) Aerobic nitrate oxidation and nitrite reduction (b) ... fixation by Rhizobium in root nodules of legumes (d) Anaerobic ammonium oxidation and denitrification

Last Answer : (d) Anaerobic ammonium oxidation and denitrification

Thiobacillus is a group of bacteria helpful in carrying out (a) denitrification (b) nitrogen fixation (c) chemoautotrophic fixation (d) nitrification.

Description : Thiobacillus is a group of bacteria helpful in carrying out (a) denitrification (b) nitrogen fixation (c) chemoautotrophic fixation (d) nitrification.

Last Answer : (a) denitrification

The process in which nitrogen is released into the atmosphere is (1) Ammonification (2) Denitrification (3) Biological nitrogen Fixation (4) Nitirification

Description : The process in which nitrogen is released into the atmosphere is (1) Ammonification (2) Denitrification (3) Biological nitrogen Fixation (4) Nitirification

Last Answer :  Biological nitrogen Fixation 

Microbial degradation of nitrates into atmospheric nitrogen is known as : (1) Ammonification (2) Nitrification (3) Denitrification (4) Putrefaction

Description : Microbial degradation of nitrates into atmospheric nitrogen is known as : (1) Ammonification (2) Nitrification (3) Denitrification (4) Putrefaction

Last Answer : Denitrification

Study the cycle shown below and select the option which gives correct words for all the four blanks A, B, C and D(a) Nitrification Ammoni- Animals Plants fication (b) Denitrification Ammoni- Plants Animals fication (c) Nitrification Denitri- Animals Plants fication (d) Denitrification Nitrification Plants Animals

Description : Study the cycle shown below and select the option which gives correct words for all the four blanks A, B, C and D (a) Nitrification Ammoni- Animals Plants fication (b) ... Plants Animals fication (c) Nitrification Denitri- Animals Plants fication (d) Denitrification Nitrification Plants Animals

Last Answer : (b) Denitrification Ammoni- Plants Animals fication

Role of decomposers in the nitrogen cycle? -Biology

Description : Role of decomposers in the nitrogen cycle? -Biology

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Which one of the following mineral elements play an important role in biological nitrogen fixation a. Copper b. Magnesium c. Zinc d. Molybdenum

Description : Which one of the following mineral elements play an important role in biological nitrogen fixation a. Copper b. Magnesium c. Zinc d. Molybdenum

Last Answer : Ans: D

The substance which may be considered to play a catalytic role in citric acid cycle is (A) Oxaloacetate (B) Isocitrate (C) Malate (D) Fumarate

Description : The substance which may be considered to play a catalytic role in citric acid cycle is (A) Oxaloacetate (B) Isocitrate (C) Malate (D) Fumarate

Last Answer : Answer : A

Yeast play an important role in the alcohol industry, converting pyruvic acid into carbondioxide and ethyl alcohol by the process of A- glycolysis B- respiration C- fermentationD- Krebs cycle

Description : Yeast play an important role in the alcohol industry, converting pyruvic acid into carbondioxide and ethyl alcohol by the process of A- glycolysis B- respiration C- fermentation D- Krebs cycle

Last Answer : fermentation

Ammonification in the nitrogen cycle? -Biology

Description : Ammonification in the nitrogen cycle? -Biology

Last Answer : answer:

What is nitrogen cycle? -Biology

Description : What is nitrogen cycle? -Biology

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Importance of nitrogen cycle? -Biology

Description : Importance of nitrogen cycle? -Biology

Last Answer : answer:

Which of the following elements plays an important role in biological nitrogen fixation? (a) Copper (b) Molybdenum (c) Zinc (d) Manganese

Description : Which of the following elements plays an important role in biological nitrogen fixation? (a) Copper (b) Molybdenum (c) Zinc (d) Manganese

Last Answer : b) Molybdenum

An element playing important role in nitrogen fixation is (a) molybdenum (b) copper (c) manganese (d) zinc

Description : An element playing important role in nitrogen fixation is (a) molybdenum (b) copper (c) manganese (d) zinc

Last Answer : (a) Molybdenum

Do genetic combination of mothers play a significant role in determining the sex of new born? -Biology

Description : Do genetic combination of mothers play a significant role in determining the sex of new born? -Biology

Last Answer : The sex of the embryo or the child in humans is determined by the father whereas, the genetic combination of mother does not play a role in determining the sex of the new-born baby.

What role do porins play in diffusion? -Biology

Description : What role do porins play in diffusion? -Biology

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What role does root pressure play in water movement in plants? -Biology

Description : What role does root pressure play in water movement in plants? -Biology

Last Answer : Root pressure is the positive pressure that develops in the roots of plants by the active absorption of nutrients from the soil. When the nutrients are actively absorbed by root hairs, water (along ... minerals) increases the pressure in the xylem. This pressure pushes the water up to small heights.

What is the nitrogen cycle?

Description : What is the nitrogen cycle?

Last Answer : The nitrogen cycle is the natural process by which nitrogen is cycled between the Earth's atmosphere, land, and oceans, through processes such as nitrogen fixation, nitrification, and denitrification, and is an important concept in biogeochemistry and environmental science.

What is the nitrogen cycle?

Description : What is the nitrogen cycle?

Last Answer : The nitrogen cycle is the process by which nitrogen is converted into various chemical forms and circulated through the Earth's ecosystems, and is an important concept in biogeochemistry and environmental science.

Describe the nitrogen cycle with appropriate diagrams. -Science

Description : Describe the nitrogen cycle with appropriate diagrams. -Science

Last Answer : The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. ... Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.

What is the Nitrogen Cycle ?

Description : What is the Nitrogen Cycle ?

Last Answer : In nature, nitrogen in the air is converted into various compounds by chemical reactions and those compounds are released back into the atmosphere in the form of free nitrogen through ... dynamic equilibrium of various chemical reactions of nitrogen compounds between the atmosphere and the soil.

Study the given figure of nitrogen cycle that shows the relationship between the three main nitrogen pools-atmosphere, soil and biomass and find label

Description : Study the given figure of nitrogen cycle that shows the relationship between the three main nitrogen pools-atmosphere, soil and biomass and find label

Last Answer : Study the given figure of nitrogen cycle that shows the relationship between the three main nitrogen pools- ... and find labelled part A,B,C & D

What are some non examples of nitrogen cycle?

Description : What are some non examples of nitrogen cycle?

Last Answer : Need answer

What process in the nitrogen cycle are completed by bacteria?

Description : What process in the nitrogen cycle are completed by bacteria?

Last Answer : It is nitrogen fixation, which occurs by nitrogen-fixing bacteria that live in the root nodules of legumes and in the soil..

Two nitrogen atoms of Urea in the urea cycle come from (A) NH3 (B) One from NH3 and one from aspartate (C) One from NH3 and one from glutamate (D) One from NH3 and one from alanine

Description : Two nitrogen atoms of Urea in the urea cycle come from (A) NH3 (B) One from NH3 and one from aspartate (C) One from NH3 and one from glutamate (D) One from NH3 and one from alanine

Last Answer : Answer : B

What is the nitrogen cycle ?

Description : What is the nitrogen cycle ?

Last Answer : The nitrogen cycle represents the circulation and recycling of the chemical element nitrogen in nature. The nitrogen cycle depends on the action of some specialized bacteria. Bacteria of the soil ... the soil and release nitrogen gas (molecular nitrogen). Image Diversity: the nitrogen cycle

(3) Conversion of ammonia to nitrites Explanation: Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate. The oxidation of ammonia into nitrite is performed by two groups of organisms, ammonia-oxidizing bacteria AOB) and ammonia-oxidizing archaea (AOA). Nitrification is an important step in the nitrogen cycle in soil.

Description : (3) Conversion of ammonia to nitrites Explanation: Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate. The oxidation of ammonia ... -oxidizing archaea (AOA). Nitrification is an important step in the nitrogen cycle in soil.

Last Answer : Acid rain is caused due to pollution of atmosphere by – (1) oxides of carbon and nitrogen (2) oxides of nitrogen and sulphur (3) oxides of nitrogen and phosphorous (4) None of these

Which of the following molecules or ions involved in the Nitrogen Cycle do not contain oxygen atom? (1) Nitrite (2) Ammonia (3) Nitrate (4) Laughing gas

Description : Which of the following molecules or ions involved in the Nitrogen Cycle do not contain oxygen atom? (1) Nitrite (2) Ammonia (3) Nitrate (4) Laughing gas

Last Answer : (2) Ammonia

Nitrogen cycle of sewage, is A. Liberation of ammonia-formation of nitrites-formation of nitratesliberation of nitrogen B. Liberation of nitrogen-liberation of ammonia-formation of nitritesformation of nitrates C. Liberation of nitrogen-formation of nitrates-formation of nitritesliberation of ammonia D. Formation of nitrates-formation of nitrites-liberation of nitratesliberation of nitrates

Description : Nitrogen cycle of sewage, is A. Liberation of ammonia-formation of nitrites-formation of nitratesliberation of nitrogen B. Liberation of nitrogen-liberation of ammonia-formation of ... of ammonia D. Formation of nitrates-formation of nitrites-liberation of nitratesliberation of nitrates

Last Answer : ANS: A

Write a note on Nitrogen Cycle?

Description : Write a note on Nitrogen Cycle? 

Last Answer : Nitrogen is very important because it is essential part of proteins, nucleic acids and chlorophyll. Nitrogen Cycle involves in four steps: Biological Nitrogen Fixation: i) In involves conversion of ... nitrates. ii) Nitrates are reduced to nitrogen gas by the action of denitrifying bacteria. 

Which of the following pairs is a sedimentary type of biogeochemical cycle? (a) Phosphorus and nitrogen (b) Phosphorus and sulphur (c) Oxygen and nitrogen (d) Phosphorus and carbon dioxide

Description : Which of the following pairs is a sedimentary type of biogeochemical cycle? (a) Phosphorus and nitrogen (b) Phosphorus and sulphur (c) Oxygen and nitrogen (d) Phosphorus and carbon dioxide

Last Answer : (b) Phosphorus and sulphur

Which one of the following is not a gaseous biogeochemical cycle in ecosystem? (a) Sulphur cycle (b) Phosphorus cycle (c) Nitrogen cycle (d) Carbon cycle

Description : Which one of the following is not a gaseous biogeochemical cycle in ecosystem? (a) Sulphur cycle (b) Phosphorus cycle (c) Nitrogen cycle (d) Carbon cycle

Last Answer : b) Phosphorus cycle

In which of the following both pairs have correct combination? (a) Gaseous nutrient cycle, Sedimentary nutrient cycle Nitrogen and Sulphur, Carbon and Phosphorus (b) Gaseous nutrient cycle, Sedimentary nutrient cycle Sulphur and Phosphorus, Carbon and Nitrogen (c) Gaseous nutrient cycle, Sedimentary nutrient cycle Carbon and Nitrogen, Sulphur and Phosphorus (d) Gaseous nutrient cycle, Sedimentary nutrient cycle Carbon and Sulphur, Nitrogen and Phosphorus

Description : In which of the following both pairs have correct combination? (a) Gaseous nutrient cycle, Sedimentary nutrient cycle Nitrogen and Sulphur, Carbon and Phosphorus (b) Gaseous nutrient cycle ... (d) Gaseous nutrient cycle, Sedimentary nutrient cycle Carbon and Sulphur, Nitrogen and Phosphorus

Last Answer : (c) Gaseous nutrient cycle, Sedimentary nutrient cycle Carbon and Nitrogen, Sulphur and Phosphorus

Best defined function of manganese in green plants is (a) photolysis of water (b) Calvin cycle (c) nitrogen fixation (d) water absorption.

Description : Best defined function of manganese in green plants is (a) photolysis of water (b) Calvin cycle (c) nitrogen fixation (d) water absorption.

Last Answer : (a) photolysis of water

Which one of the following is not a gaseous biogeochemical cycle in ecosystem ? (1) Carbon cycle (2) Sulphur cycle (3) Phosphorus cycle (4) Nitrogen cycle

Description : Which one of the following is not a gaseous biogeochemical cycle in ecosystem ? (1) Carbon cycle (2) Sulphur cycle (3) Phosphorus cycle (4) Nitrogen cycle

Last Answer : (3) Phosphorus cycle

Best defined function of Manganese in green plants is (1) Water absorption (2) Photolysis of water (3) Calving cycle (4) Nitrogen fixation

Description : Best defined function of Manganese in green plants is (1) Water absorption (2) Photolysis of water (3) Calving cycle (4) Nitrogen fixation

Last Answer : (2) Photolysis of water

The main role of bacteria in the carbon cycle involves (a) chemosynthesis (b) digestion or breakdown of organic compounds (c) photosynthesis (d) assimilation of nitrogenous compounds.

Description : The main role of bacteria in the carbon cycle involves (a) chemosynthesis (b) digestion or breakdown of organic compounds (c) photosynthesis (d) assimilation of nitrogenous compounds.

Last Answer : (b) digestion or breakdown of organic compounds

The main role of bacteria in the carbon cycle involves (a) chemosynthesis (b) digestion or breakdown of organic compounds (c) photosynthesis (d) assimilation of nitrogenous compounds.

Description : The main role of bacteria in the carbon cycle involves (a) chemosynthesis (b) digestion or breakdown of organic compounds (c) photosynthesis (d) assimilation of nitrogenous compounds.

Last Answer : (b) digestion or breakdown of organic compounds