3. and fibre cells are long plant cells. 5. Cell wall was discovered by 6. Lysosomes contain enzymes. 7. Cylindrical bodies of centrosomes are called 8. The fluid part of the cytoplasm is called the 9. The transparent substance in nucleus is 10. ..... help in synthesis of proteins. bjective Evaluation Answer the following questions: Name the scientists who proposed the cell theory. What does the theory Il