Structure X is a non-membrane bound body found in the nucleoplasm. It synthesizes a component that, along with proteins, forms structure Y. Structure Y is also non-membrane bound and serves as the primary site of protein synthesis in the cell. Identify structures X and Y.

Step-by-step solution

Structure Y is the primary site of protein synthesis, which identifies it as the ribosome. Ribosomes are non-membrane bound organelles composed of ribosomal RNA (rRNA) and proteins. Structure X synthesizes the rRNA component of ribosomes and is a non-membrane bound body located in the nucleoplasm. This identifies structure X as the nucleolus, which is the site of active ribosomal RNA synthesis. The nucleus is a membrane-bound organelle. The rough endoplasmic reticulum is a membrane-bound network studded with riboso