Are embedded in the plasma membrane and actively transport water out of the cel

Polar heads are embedded in the plasma membrane and have the function of releasing and obtaining water for the cell in a process known as osmosis.

The image below shows you the polar heads on the cell membrane. (Hidrophilic)

Hope it helped,

BioTeacher101

it's the cell cycle, but cytokines is when the cell divides.

theres 3 stages interphase,mitosis,and cytokines.

interphase prepares the cell for division.

mitosis is the process of dividing the cell,it has 4 parts interphase,anaphase,metaphase,and telophase.

lastly there's cytokines,that's when the cell divides into 2 daughter cells

the answer is b.) hydrogen bonds between bases.