* Proteins are essential for life: Proteins perform a vast array of functions in the cell, including:
* Enzymes: Catalyze (speed up) biochemical reactions.
* Structural components: Provide shape and support to cells and tissues.
* Hormones and signaling molecules: Communicate between cells.
* Transport proteins: Move substances across cell membranes.
* Antibodies: Defend the body against infection.
* And much more!
* Ribosomes are the only organelles that can synthesize proteins: Ribosomes read the genetic code from messenger RNA (mRNA) and use that information to assemble amino acids into protein chains. This process is called translation.
Without ribosomes, cells would be unable to produce any of the essential proteins they need to function. This would lead to cell death.
Therefore, all cells, from bacteria to humans, need ribosomes to survive.
