Why is the nucleus called the control center of the cell?

It holds all of the genetic material, meaning that the type of cell (blood, skin, etc) depends on the nucleas and its genetic material. It also controls many cell functions, such as translation and DNA replication.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.