Soil microorganisms, collectively referred to as dizotrophs, fix 90% of the inert nitrogen gas to ammonium and nitrate. There are two-main types of nitrogen-fixing bacteria: free-living (nonsymbiotic) and mutualistic (symbiotic). Describe the mutualistic relationship between Rhizobium and legumes. What is the advantage of using legumes as a cover crop in agricultural systems? A point of interest is that the nitrogenase enzyme complex is highly sensitive to oxygen. This is a major problem for free-living aerobic species such as cyanobacteria and species of the genera Azotobacter and Beiigrinckia. Describe two ways the bacteria can overcome to levels of oxygen in their cells.

Q: Which of these are known to host chemosynthetic communities? a) Hydrothermal vent O b) Hydrocarbon…

A: The food chain in our ecosystem depends on the primary producers as they are capable of harvesting…

Q: Mention 5 examples that can carry out the metabolic pathways of assimilation in the nitrogen cycle.

A: Nitrogen assimilation is the process of nitrogen fixation and Nitrification carried out by plants…

Q: A batch reactor was initially filled with organic substrate (S0) with an equivalent concentration of…

A: Bioreactor is the equipment used for the production of biomass. Cells consume substrate and multiply…

Q: Select the true statements about micorrhiza :

A: Mycorrhiza may be defined as a symbiotic association between plants and fungi for mutual benefit of…

Q: Which of the following statements is/are TRUE for nitrogen fixation? A. Process is performed by…

A: Nitrogen fixation:   It is the natural method of obtaining atmospheric nitrogen and utilisation of…

Q: What are the major exchangeable cations in soils? How do the relative proportions change between…

A: Soil is that the uppermost weathered layer of crust . it's a mix of weathered mineral rock…

Q: ne nitrogen fixation and identify the key enzyme involved. Additionally explain how and why N fixing…

A: The biological compounds need nitrogen and this nitrogen is very much important for protein…

Q: Why is nitrogen important to living things? What type of organism is responsible for making nitrogen…

A: The balance of the nutrients in the biosphere makes life sustainable. The movement of nutrient…

Q: The rhizosphere is: Group of answer choices A.) an area 1-2 mm in thickness adjacent to the root.…

A: It is the type of close and long term biological interaction between two different biological…

Q: In what soil horizon are microbial numbers andactivities the highest, and why?

A: A soil horizon is a layer parallel to the soil surface which has different physical,chemical and…

Q: Available Nutrients occur in the soil generally in the form of: Group of answer choices A.) Ions…

A: Soil is a heterogeneous mixture of various organic and inorganic compounds.

Q: state a research question that will directly address the farmer’s problem

A: The crop water used is influenced by the crop growth stage, weather conditions, and various other…

Q: have seen that energy is essential for life on earth. All organisms need energy to maintain their…

A: Green plants are the producers as the prepare food for all the living Kingdom. Heterotrophs are…

Q: a) Glyphosate (Roundup) is toxic to almost all types of plants. Why is it generally considered to be…

A: Glyphosate is a broad spectrum herbicide which is derived from glycine amino acid.

Q: Why is the stringent response typically active during nitrogen starvation but not in response to…

A: Bacteria depend on the nutrient sources for their growth and reproduction. Nutrients such as carbon,…

Q: The practice of crop rotation uses nitrogen fixation to create fertile fields. First, a plant…

A: Nitrogen fixation is the process by which plants and associated bacteria fix atmospheric nitrogen…

Q: In terms of the nitrogen cycle and movement of electrons, what is the difference between nitrogen…

A: Nitrogen fixation, assimilatory nitrate reduction, ammonia absorption, and others are among the…

Metabolic pathways

Metabolism is defined as the group of life-supporting, enzyme-mediated chemical reactions in organisms. A metabolic pathway is a set of these chemical reactions that involve anabolism (synthesis of complex biomolecules) and catabolism (breakdown of biomolecules into small molecules) that occur inside a cell. Metabolites are the reacting substances, products, and intermediate substances of an enzymatic process that are altered by a series of chemical events catalyzed by enzymes.