Explain what a concentration gradient is and how it is used in cellular respiration.

A concentration gradient is how to particles in a solution move from areas of high solute concentration to low solute concentration. This is used in cellular respiration within the Electron Transport Chain as a concentration gradient forms in which hydrogen ions diffuse out of the matrix space by passing through ATP synthase. If you need further clarification don't hesitate to ask.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands