It is impecable that DNA doubles itself before mitosis because you need the copied DNA to be able to gain more cells. If your DNA did not undergo mitosis then we would forever remain a baby, brain and all.
Answer:
D. Which cell organelles carry out the process of photosyinthesis and cellular respiration?
Two first the sponge can claim are
1. reproduce sexually
2. combine sperm and egg
1. B
2. C
(check with your teacher to make sure and explain it to you)
