More free energy is released during the krebs cycle than during glycolysis, but only 2 moles of atp is produced for each mole of glucose undergoing glycolysis. most of the remaining free energy that is produced during the krebs cycle is used to

reduce NAD+ and FAD.

Explanation:

In the Krebs cycle the carbons donated by the acetyl group are oxidized to CO2 and the electrons pass to the electron transporters. As in glycolysis, a specific enzyme is involved in each step. Coenzyme A is the link between the oxidation of pyruvic acid and the Krebs cycle. In the course of these steps, some of the energy released by the oxidation of the CH and CC bonds is used to convert ADP to ATP (one molecule per cycle), and part is used to produce NADH and H + from NAD (three molecules per cycle). In addition, a fraction of the energy is used to reduce a second electron transporter, the FAD. For each turn of the cycle, a molecule of FADH2 is formed from FAD. O2 is not required for the Krebs cycle: electrons and protons removed in carbon oxidation are accepted by NAD + and FAD. It takes two turns of the cycle to complete the oxidation of a glucose molecule. Thus, the total energy efficiency of the Krebs cycle for one glucose molecule is two molecules of ATP, six molecules of NADH and two molecules of FADH2.

a

explanation:

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: