NAD +molecule
Explanation:
Krebs cycle and electron transport chain are important steps in cellular respiration.
In the Krebs cycle, there is a need of NAD+ molecule which is then in Krebs cycle reduced to form a NADH2 molecule.
NADH2 is also an energy currency. It , giving electron in electron transport chain and return to Krebs cycle as NAD+.
Now in the Krebs cycle, it is ready to take electrons again.
<span>D All organisms experience evolution
</span>Common ancestry is identified in the genes. Selection forces are the drives to these physical and composition changes of an organism however, it can be traced back.
<span>Adaptation processes occur to help species survive and thrive in the ecological balance of life. Structural adaptations are physical features of an organism that adapted through time. </span>
As polymers are to MONOMERS.......
The crust is the outermost layer of the Earth.
The lithosphere is not between itself and the outer core.
The inner core is the center of the Earth, which is located further in than the outer core.
The answer is the mesosphere.
