Ribosomes are cell organelles that consist of RNA and proteins. They are responsible for assembling the proteins of the cell. Depending on the protein production level of a particular cell, ribosomes may number in the millions.
Location in the Cell:
Free ribosomes usually make proteins that will function in the cytosol (fluid component of the cytoplasm), while bound ribosomes usually make proteins that are exported from the cell or included in the cell's membranes. Interestingly enough, free ribosomes and bound ribosomes are interchangeable and the cell can change their numbers according to metabolic needs.
Eukaryotic Cell Structures:
- Centrioles - help to organize the assembly of microtubules.
- Chromosomes - house cellular DNA.
- Cilia and Flagella - aid in cellular locomotion.
- Cell Membrane - protects the integrity of the interior of the cell.
- Endoplasmic Reticulum - synthesizes carbohydrates and lipids.
- Golgi Complex - manufactures, stores and ships certain cellular products.
- Lysosomes - digest cellular macromolecules.
- Mitochondria - provide energy for the cell.
- Nucleus - controls cell growth and reproduction.
- Peroxisomes - detoxify alcohol, form bile acid, and use oxygen to break down fats.