D would be the answer to this question
Answer:
The plasma membrane is made up by a phospholipid bilayer with embedded proteins that separates the internal contents of the cell from its surrounding environment. Only relatively small, non- polar materials can easily move through the lipid bilayer of the plasma membrane.
Explanation:
ANIMAL. It's because animals are living organisms. Also 6 letters! A-N-I-M-A-L!
D because they are complete systems
If this answers your question:
Disaccharides are formed when 2 sugar molecules combine. An example of this is Maltose
