What can you conclude about the advantage of the cell membrane having hydrophobic ends in the phospholipid bilayer?

the cell requires the ability to digest and eliminate enzymes.

the cell requires a barrier between itself and its environment.

the cell requires a means to store starches and glucose.

the cell requires a structure for eliminating waste.

The answer is:  

The cell requires a barrier between itself and its environment.

I did the test

gametes or germ cells are haploid cells (example: sperm and ova) containing only one set (or n) number of chromosomes and autosomal or somatic cells are diploid cells containing 2n number of chromosomes.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands