Invertebrates have no spine, and they often don't have nearly as many organs as vertebrates. Overall, they are much simpler organisms.
Scabs and Clots to help stop cuts and scrapes from bleeding.
Answer:
A.) the phospholipid heads can interact with water inside and outside the cell
Explanation:
Phospholipid heads are hydrophilic - they are attracted to water. The tails are hydrophobic - they repel water. In the lipid bilayer arrangement - the heads interact with the water inside and outside of the cell, whereas the tails cluster together to avoid the water. These properties are what create the lipid bilayer arrangement which creates a selectively permeable membrane.
