Contrast the electron transport chain in photosynthesis with cellular respiration by identifying the source of the high-energy electron. in photosynthesis, the electron that travels through the electron transport chain in the thylakoid membrane comes from ? in cellular respiration, a molecule of what supplies the electron that travels through the electron transport chain? .

In photosynthesis, electrons that travel through the electron transport chain in the thylakoid membrane come from "water."

In cellular respiration, molecules of "NADH" supply some of the electrons that travel through the electron transport chain.

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

the answer would be   10%