LIFE SCIENCE

Detailed explanation-1: -The Golgi apparatus, also called Golgi complex or Golgi body, is a membrane-bound organelle found in eukaryotic cells (cells with clearly defined nuclei) that is made up of a series of flattened stacked pouches called cisternae.

Detailed explanation-2: -The Golgi apparatus is part of the membrane system that also contains the ER. It consists of stacked membrane-coated cavities, called dictyosomes (Fig. 1.4B). The Golgi apparatus is located close to the nucleus and can be very large in secretory cells, where it fills almost the complete cytoplasm.

Detailed explanation-3: -The Golgi apparatus is an internal organelle found near the nucleus of a eukaryotic cell. It is a stack of membrane-enclosed sacs called cisternae. Each stack contains 3-20 cisternae.

Detailed explanation-4: -Perhaps more importantly, cisternal stacking directly controls the flux rate of protein trafficking through the Golgi stack. The progression of molecules through the stack depends on the budding and fusion rate of COPI vesicles. With fully stacked cisternae, vesicles can only form and fuse at the rims.