1. Explain why the cells of a multicellular organism do not all look the same. Use scientific vocabulary in your answer. 2. Explain how a pancreas cell knows that it should produce and secrete insulin after a meal. Pancreas cell 3. Explain why the nuclear membrane is dotted with pores. 4. Identify the organelle labeled “B,” and describe its function. B A C D 5. Identify the organelle labeled “C,” and describe its function. B A C D 6. Identify the organelles labeled “A,” and describe their function. B A C D 7. Identify the structure labeled “D” in the diagram, and explain why it is needed. B A C D 8. The micrograph below shows a cell taken from the liver of an alcoholic. Explain why this cell contains an abundance of smooth ER.