The principle role for sugars in living things is to

The principle role for sugars in living things is to provide energy to the body.

Explanation: Sugars are the Carbohydrate molecules. Sugar provide essential energy to body where it needed in the body.

Complex Carbohydrates made up of many monosaccharide molecules

( simple sugar ). Cells in the body with help of essential enzymes break down complex sugar into simple sugar ( glucose ).

By the process of cellular respiration food energy is converted into usable energy source adenosin triphosphate ( ATP ).

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.