DENDROLOGY

Detailed explanation-1: -Ribosomes. Ribosomes are non membrane-bound and important cytoplasmic organelles found in close association with the endoplasmic reticulum. Ribosomes are found in the form of tiny particles in a large number of cells and are mainly composed of 2/3rd of RNA and 1/3rd of protein.

Detailed explanation-2: -Cells also have a set of “little organs", called organelles, which are adapted and/or specialized for carrying out one or more vital functions. Organelles are found only in eukaryotes and are always surrounded by a protective membrane.

Detailed explanation-3: -In cell biology, an organelle is a specialized subunit, usually within a cell, that has a specific function. The name organelle comes from the idea that these structures are parts of cells, as organs are to the body, hence organelle, the suffix-elle being a diminutive.

Detailed explanation-4: -membrane – thin tissue that surrounds and contains an organelle. membrane-bound – an organelle that is surrounded by a membrane. description: membrane-bound structure inside eukaryotic cells that contains DNA.