The electron transport chain is the final step in cellular respiration and this process occurs along the inner membrane of our mitochondria .Inside our mitochondria ,the cells energy producing organelle,there is a membrane.
Explanation:
Cell wall is not present in animal cells .
The answer that best fits the description above is the hormone GLUCOCORTICOID. This was according to Hans Selye, an Austrian-Canadian endocrinologist. According to him, ill health induced by exposure of chronic stress is due to the secretion of the hormone glucocorticoid.