Explain why the energy investment phase of glycolysis is necessary

Energy investment phase of Glycolysis is necessary so that reaction can occur Spontaneously or in Thermodynamically favorable manner.

Explanation:

Coupling Reaction helps an Endergonic reaction to take place by coupling that reaction with an Exergonic reaction that generates energy such as hydrolysis of ATP.

       The first step of Glycolysis is an energy investment step because the ist step of Glycolytic pathway deals with attachment of inorganic phosphate  with glucose molecule(endergonic reaction) with the help of ATP hydrolysis(exergonic reaction) that generates energy to carry out the formation of Glucose 6 phosphate from glucose.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.