What is one job proteins do NOT have in the body 1.serve as a layer of insulation

2.support the immune system

3.structure for tissues and organs

4.serve as enzymes

1. serve as a layer of insulation

is not a job of proteins

protein synthesis is an example of feedback mechanism which in homeostasis

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )