During mitosis, the nucleus of the cell divides into two nuclei. after this division, the new nuclei contain the same number and kinds of as the parent cell.
a. cells
b. ribosomes
c. rna
d. chromosomes

Which of these internal feedback reactions does not need your brain? oa. your leg jumping when it is hit by a reflex hammer b. your deeper breathing when you need more oxygen c. your body temperature rising when you have an infection d. your heart beating faster when you are in danger