Why is diffusion important to cells?

it permits the sorting of water molecules from solute molecules, such as sugar.

it regulates salt content in the cell, preventing bloating and shriveling.

it maintain the balance of materials needed for survival, such as oxygen and water.

the back and forth movement creates extra energy as adp is transformed into atp.

Its regulates salt content in the cell

Explanation:

the correct answer is c   with the systems

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.