Time Left: 600 sec

1. Who first discovered cells while examining a thin slice of cork?

2. The term "cell" comes from the Latin word meaning—

3. The scientist who discovered the nucleus in a cell was—

4. The cell theory was first proposed by—

5. Who expanded the cell theory by suggesting that all cells arise from pre-existing cells?

6. The cell is called the basic unit of life because—

7. Unicellular organisms are those that—

8. Which organism shows change in shape continuously?

9. The plasma membrane is made of—

10. Plasma membrane is called selectively permeable because it—

11. The movement of molecules from higher to lower concentration is—

12. The diffusion of water through a selectively permeable membrane is called—

13. A cell placed in a hypotonic solution will—

14. A hypertonic solution causes a cell to—

15. When no net movement of water occurs across a membrane, the solution is—

16. The rigid outer covering of a plant cell is called—

17. The main component of the plant cell wall is—

18. The phenomenon of shrinkage of cytoplasm from the cell wall due to water loss is—

19. The nucleus is surrounded by—

20. Functional segments of DNA are called—