Question 13: What happens to a cell placed in a hypotonic solution?
Response: The cell swells and may burst.
Question 14: What is the primary structural difference between a virus and a cell?
Response: Cells have a nucleus and organelles, while viruses lack both.
Question 15: In what way do viruses and cells differ in their ability to respond to stimuli?
Response: Cells can respond to environmental stimuli, while viruses cannot.