Exocytosis is the process of exporting materials from the cell.
An example process of how organelles in a cell would work together to produce insulin would be:
- Genes are in DNA
- They are transcribed to mRNA
- The mRNA leaves the nuclear envelope via nuclear pores
- Ribosomes are made in the nucleolus
- Ribosomes translate the mRNA into a protein, which passes through the rough endoplasmic reticulum
- Vesicles containing insulin pass via the Golgi Body
- In the Gologi, the insulin is packaged and modified to be ready for use in the body
- Vesicles pinched off from Golgi pass to plasma membrane.
- Vesicles and the plasma membrane fuse and excrete insulin into the cell’s surroundings via exocytosis.