cell structure

• exocytosis


  exocytosis is the process by which cells release substances from intracellular vesicles into the external environment

  vital for cell communication and secretion of molecules like hormones, enzymes, neurotransmitters, and waste products.

  involves fusion of vesicle membrane with cell membrane, leading to release of vesicle contents outside the cell.

  essential for cellular functions and maintaining cell homeostasis.
• endocytosis


  a cellular process in which a cell takes in substances from the external environment by engulfing them in a vesicle formed from the cell membrane

  this process allows the cell to take in materials such as nutrients, signaling molecules and other substances from the extracellular environment