The cell's endomembrane system is most like which system of the human body?
A. Digestive
B. Integumentary
C. Musculoskeletal
D. Circulatory
2. Which one of these is not an example of intercellular communication?
A. Hypothalamus signals pituitary gland
B. ribosomes make protein
C. Endocrine cells send hormones into blood
D. Bacteria share information about nutrients