Phillip was performing a laboratory exercise on how temperature affects a plant's cellular activity. he discovered that when exposed to high temperatures (around 50 degrees celsius), the overall rate of glucose production by photosynthesis decreased. which of these conclusions would best explain why this occurred? a) the high temperatures denature the proteins in the plasma membrane, thus making many of the cells unable to function properly. b) the higher temperatures hardened the plasma membrane not allowing glucose to leave the cell. c) the temperature decreased the availability of oxygen to the plant. d) as you increase the temperature, the plant cells go dormant. elimi