The signal sequence stops translation and directs the ribosomes — which are carrying ... The ER, Golgi apparatus, and lysosomes are all members of a network of membranes, but they are not ...

Ribosomes are the sites in a cell in which protein synthesis takes place. Cells have many ribosomes, and the exact number depends on how active a particular cell is in synthesizing proteins.

HHMI scientists and their colleagues discover a new mechanism of protein synthesis. Ribosomes are the cell’s molecular machines, responsible for translating genetic information in messenger RNA into ...

Fats and other cellular materials reach the lysosome through three main pathways: endocytosis, phagocytosis, and autophagy. In endocytosis, the cell takes in materials from outside by wrapping ...