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CBSE › Class 9 › Science › Cell: The Building Block of Life (Class 9 NCERT New)
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1. What is the dense round body located inside the nucleus where ribosomal subunits are synthesized?

2. Why do mature human red blood cells (RBCs) lack a nucleus (enucleate)?

3. What is the average lifespan of a human red blood cell?

4. What is the specific region containing the single circular DNA molecule in a prokaryotic cell called?

5. What cellular structures are famously called the "protein factories" of the cell?

6. Macromolecules are small molecules.

7. Which of the following is NOT a macromolecule?

8. The macromolecules include...

9. Which macromolecule is a central energy source for organisms?

10. What is a long carbohydrate called?

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