The diagram below represents a lab setup. The artificial cell (dialysis tube) contains a starch
solution and the beaker contains a solution of
starch indicator and water. The setup is left
undisturbed for twenty minutes,
-Starch indicator and water
-Dialysis tube
Starch solution
a) Identify one molecule, present in this setup, that will
be able to pass through the dialysis tubing.
b) Describe one observation that could be made that
would confirm that the molecule you identified
previously had passed through the membrane.

 daddy

Explanation:

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

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 : )