Discuss the effect of caffeine administration on the frequency of Daphnia heart contractions? How does this effect change with increasing the dose of caffeine?

Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.