Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Problem:Passage: CHAPTER SUMMARY 4.1 Studying Cells A cell is the smallest unit of life. Most cells are so tiny that they cannot be seen with the naked eye. Therefore, scientists use microscopes to study cells. Electron microscopes provide higher magnification, higher resolution, and more detail than. Answer: cell
Solution:
What is considered the smallest unit of life?