A particular organism converts Fe3 to Fe2 during anaerobic respiration. In this case, is an electron . Choose one: A. Fe2 ; acceptor B. Iron cannot be oxidized or reduced. C. Fe3 ; acceptor D. Fe3 ; donor

C

Explanation:

All organisms including anaerobic organisms undergo respiration. The difference in the cellular respiration of aerobes and anaerobes is that oxygen is the final electron acceptor in aerobic cellular respiration while another element is the electron acceptor in anaerobic respiration.

This process of transferring electrons in cellular respiration occurs during the electron transport chain (ETC). According to the question, the anaerobic organism converts Fe3 to Fe2 during respiration, meaning that iron is its final electron acceptor during ETC.

In chemistry, an electron acceptor accepts an electron (e-) and become reduced itself. In this case, the oxidation state of iron reduced from +3 to +2 because it accepted one electron (e-).

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation:

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.