Question

During a heart attack, blood flowing to the heart muscle is interrupted by a blockage of a coronary artery. How would you expect the metabolism in the cells of the heart to change? Be specific. And what would the consequences be if PS2 were not functional in a chloroplast? What would and would not occur?

Answer 1

not sure about photosystem 2, i think its the one that depends on light to split CO2 and water into organic matter and O2 gas, go to wikipedia, as per heart attack, basically coronary arteries that supply heart itself with oxygen, gets blockaded with, commonly, cholesterol (could be anything else) basically oxygen and blood stopps delivering sodium needed for muscle to work as well as oxygen, so the muscle stops working properly, if not immediately hospitalized, the heart might stop forever

Answer 2

in terms of metabolism, the heart without oxygen (like another tissue) will start reducing pyruvate (to lactic acid) to regenerate \(NAD^+\)as it needs it continue with glycolysis - it can't continue with the electron transport chain pathway because there isn't another final electron acceptor.