You Ribosomes, also called Ribosomes, are small granule-like structures that are present in prokaryotic and eukaryotic cells.
They are fundamental for growth, cell regeneration and metabolic control.
Role of Ribosomes
The function of ribosomes is to assist in the production and synthesis of proteins in cells. In addition to it, the molecules of DNA and RNA.
Ribosomes bring together several amino acids during protein synthesis through a chemical bond called a peptide bond.
Learn more about the topic by reading the articles:
- amino acids
- Proteins
- Protein synthesis
- Peptides and Peptide Bonds
Structure and composition of Ribosomes
The structure of ribosomes resembles a granule, so they have a rounded shape.
It is formed by ribosomal folded RNA molecules, associated with proteins. Thus, they are formed by proteins (more than 80 types) and ribonucleic acid (RNA).
They are largely present in the cytoplasm (free ribosomes). However, they can be found in the mitochondria, US chloroplasts and in the endoplasmic reticulum.
When associated with the surface of the endoplasmic reticulum, they form the rough (or granular) endoplasmic reticulum.
When associated with messenger RNA (mRNA) in protein synthesis, they form polysomes or polyrobosomes.
Ribosomes do not have membrane, and, for this reason, they are not considered cytoplasmic cell organelles by many scholars of the subject.
For others, ribosomes may be considered non-membranous cell organelles so that they remain free in the cytoplasm (hyaloplasm) of cells.
Golgi and Lysosome Complex
O golgi complex, also called the golgi apparatus, is a cell organelle responsible for exporting proteins synthesized in the rough endoplasmic reticulum.
It modifies and stores proteins and other substances. In addition, they give rise to another cellular structure: the lysosomes.
Lysosomes are spherical cell organelles formed by various enzymes. For this reason, they help to digest various substances for the cell (intracellular digestion), such as lipids, carbohydrates, proteins and nucleic acids (DNA and RNA). In relation to ribosomes, these are much larger.
peroxisomes
O peroxisomes they are cell organelles similar to lysosomes in their function. They are structures responsible for digesting various substances, given the amount of enzymes they contain.
What makes them different from lysosomes is the type of enzyme they have (oxidase enzymes).
Curiosity about ribosomes
Did you know that ribosomes are present in every cell in the human body except sperm (male sex cells).
Continue your research by reading the articles:
- Cell
- Human Body Cells
- Prokaryotic Cells
- Eukaryotic Cells
- Cell Core
