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1. The thread-like structure visible in a non-dividing nucleus is—

2. Cells lacking a well-defined nucleus are called—

3. The fluid content inside the cell membrane is known as—

4. Viruses are considered non-living because they—

5. The cell organelle that forms a network of membranes for transport is—

6. Rough Endoplasmic Reticulum appears rough due to presence of—

7. The site of protein synthesis in the cell is—

8. Smooth Endoplasmic Reticulum helps in synthesis of—

9. The process of forming the cell membrane from proteins and lipids is called—

10. The organelle that stores, modifies and packages materials is—

11. Lysosomes contain—

12. Lysosomes are called “suicide bags” because—

13. Mitochondria are called the powerhouses of the cell because they—

14. Mitochondria possess their own—

15. Plastids are found only in—

16. Chloroplasts contain the pigment—

17. The colorless plastids used for storage are called—

18. Vacuoles in animal cells are generally—

19. Plant vacuoles are filled with—

20. Vacuoles help to maintain—