Robert Brown first described the nucleus as a cell organelle in 1831. Inside the nucleoplasm, one or more dense, spherical structures are seen, and they are sites of active ribosomal RNA synthesis. What are these structures called, and are they bound by a membrane?

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Robert Brown first described the nucleus as a cell organelle in 1831. Inside the nucleoplasm, one or more dense, spherical structures are seen, and they are sites of active ribosomal RNA synthesis. What are these structures called, and are they bound by a membrane?

More NEET Biology chapters

Practising is step one. Knowing what to practise next is the hard part.

Practising is step one. Knowing what to practise next is the hard part