They can repair damaged immune systems and they make replacement heart valves.
Answer:
Metaphase
Chromosomes line up at the metaphase plate, under tension from the mitotic spindle
Answer:
it's the last one
Explanation:
since you don't want to get yourself or the other person sick or infected.
Mitosis is the process by which a cell (more strictly the nucleus of a cell) divides into two.
Answer:
Insects may visit them to collect pollen, but usually are ineffective pollinators and exert little natural selection on the flowers. Anemophilous, or wind pollinated flowers, are usually small and inconspicuous, and do not possess a scent or produce nectar. ... No bright colors, special odors, or nectar. Small.