HELP PLEASE!! Positive transcription factor (PTR) is important because it turns genes on to prepare them to be read. What is more important (i. e., which has a greater impact if it is changed): concentration or affinity? If PTR concentration is low but affinity is high, then what will happen to protein levels versus if PTR affinity is high but the concentration is low? Argue your point in three to five sentences. Use the simulation if necessary.