WHICH small, membranous organelle, found very close to the nucleus in animal cell is : *
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Nucleolus. Within the nucleus is a small subspace known as the nucleolus. It is not bound by a membrane, so it is not an organelle. This space forms near the part of DNA with instructions for making ribosomes, the molecules responsible for making proteins.
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A ribosome is the site of protein synthesis in the cell. Each ribosome consists of a large subunit and a small subunit, each of which contains rRNA (ribosomal RNA) and ribosomal proteins. In protein synthesis the mRNA (messenger RNA) moves through the ribosome while amino acids attached to tRNAs (transfer RNAs) are brought to the ribosome. The amino acids are joined to produce the protein. You may access more information on From Gene to Protein: Translation. Ribosomes exist free in the cytoplasm and bound to the endoplasmic reticulum (ER). Free ribosomes synthesize the proteins that function in the cytosol, while bound ribosomes make proteins that are distributed by the membrane systems, including those which are secreted from the cell.
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