anphy

• A cell is the basic structural and functional unit of all living organisms
• Cells can be classified into two main types: prokaryotic cells and eukaryotic cells
• Prokaryotic cells:

  • Do not have a nucleus
  • Have a simple structure
  • Examples include bacteria
• Eukaryotic cells:

  • Have a nucleus that houses the genetic material
  • Have membrane-bound organelles that carry out specific functions
  • Examples include plant and animal cells
• Cells carry out various functions such as metabolism, growth, response to stimuli, and reproduction
• Cell theory states that:

  • All living organisms are composed of one or more cells
  • The cell is the basic unit of structure and organization in organisms
  • Cells arise from pre-existing cells through cell division
• Cell membranes are semi-permeable, allowing the passage of certain substances while restricting others
• Cells can be specialized to perform specific functions in multicellular organisms, forming tissues, organs, and organ systems