http://wiki.answers.com/Q/A_metabolic_pathway_where_one_reactant_in_the_first_reaction_is_also_a_product_in_the_final_reaction"
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Enzyme catalyzed reactions are the chemical reactions that occur in series where the product of one reaction serves as the reactant in the next reaction. These reaction pathways allow a cell to grow and reproduce.
Feedback inhibition
This depends on the reaction involved.
product
It can be either, depending on the reaction. Sodium chloride is a product of the reaction of sodium hydroxide and hydrochloric acid. Sodium chloride is a reactant in the ion exchange reaction in a water softener to remove calcium from hard water.
Enzyme catalyzed reactions are the chemical reactions that occur in series where the product of one reaction serves as the reactant in the next reaction. These reaction pathways allow a cell to grow and reproduce.
Yes it is true
Feedback inhibition
This depends on the reaction involved.
reactant + reactant = product
If a substance is a reactant or product of a chemical reaction then, by definition, it cannot be a catalyst.
If a substance is a reactant or product of a chemical reaction then, by definition, it cannot be a catalyst.
product
In a chemical reaction the limiting reactant is the reactant that there is the least of in the reaction; it determines the amount of product formed. In a chemical reaction it is the reactant that gets completely "used up"
When the limiting reactant is completely used up. A limiting reactant is the reactant that determines the amount of product. To determine this use the balanced chemical reaction with the masses of the reactants to determine the moles of product formed. The reactant that forms the least amount of product will be the limiting reactant.
Using an excess of another reactant limits a reactant.
fermentation