Answer:
They have molecules that has a phosphate group on an end and it is called the head. The two-two fatty chain make the lipid tail. The phosphate is negative charged and makes the hydrophilic and head polar. And then the two head are attracted to water.
The cell membrane is made up of a double layer of phospholipids. That is also the reason why the cell membrane is called the phospholipid bilayer; containing two layers of phospholipids.
The answer is april through june
Answer:
Larger animals have a lower surface area to volume ratio. This means they need transport systems like our circulatory system and exchange surfaces like our lungs or fish gills. In single-celled organisms such as protists, and small multicellular organisms, essential molecules will move to where they're needed by diffusion.
Explanation:
