Which one of the following is a vestigial structure?
a. liver
b. heart
c. right leg
d. appendix

Which of the following statements are true chromosomes make up genes

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.

What are levels of ecology and how can we remember them