Use this information to answer the next three questions. In…

Use this information to answer the next three questions. In 1966, Andre Jagendorf and Ernest Uribe published a paper on experiments to study hydrogen ions and ATP production during photosynthesis. The investigators isolated chloroplasts from spinach leaves and disrupted them so that chemical reagents added during the experiment would have access to the thylakoids. These broken chloroplasts were soaked in a “first solution” with a high hydrogen ion concentration and then transferred to a fresh “second solution” at low hydrogen ion concentration. This second solution also contained ADP and inorganic phosphate. The rate of ATP production was measured from the second solution. This table summarizes Jagendorf and Uribe’s results. Hydrogen Ion Concentration (nmol/liter) Trial # First Solution Second Solution Rate of ATP synthesis 1 10,000 5.0 4 nmol/mg 2 25,000 5.0 11 nmol/mg 3 159,000 5.0 28 nmol/mg 4 63.0 63.0 0 nmol/mg 5 10,000 63.0 0 nmol/mg 6 25,000 63.0 0.5 nmol/mg 7 159,000 63.0 8 nmol/mg

A nuclear plant worker spilled an extremely radioactive chem…

A nuclear plant worker spilled an extremely radioactive chemical on his skin.  After a few months he started noticing a foul smell and an odd color where he spilled the chemical.  Concerned with his condition, the worker goes to a lab. Upon closer analysis of the patient’s cell growth and production, the doctor notices that the chromosomes of his patient’s cells are mutated and dying because after every round of replication the chromosomes are shortening.  Which one of the following proteins has been inhibited by the radioactive chemical?