The electron transport chain (etc), or respiratory chain, is linked to proton movement and atp synthesis. select the statements that accurately describe the electron transport chain. electrons generated by the citric acid cycle in the intermembrane space enter the etc. the reactions of the etc take place in the inner membrane of mitochondria. consider what must be true for a proton gradient to be set up across the inner membrane. electron carriers in the etc include ubiquinone (coenzyme q) and cytochrome c. prosthetic groups, such as iron–sulfur centers, are directly involved with electron transfer. electron carriers are organized into four complexes of proteins and prosthetic groups. electron transfer in the etc is coupled to proton transfer from the matrix to the intermembrane space.

Electron transfer in the ETC is coupled to proton transfer from the matrix to the intermembrane space.

Explanation:

The energy generated by the movement  of electrons through protein carriers at different energy levels(ETC)  is used to pump protons across the intramembrane to the matrix. Thus, if the electron transport stops, protons pumps stops, ATPs synthesis by the ATP-synthase stops

This shows a coupled reaction

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: