Cells

• What are cells considered in living organisms?


  Basic building blocks
• Can cells reproduce independently?


  Yes, they can reproduce independently
• What functions do cells carry out?


  All functions of life, including metabolism and growth
• What surrounds a cell?

  A cell membrane
• What does selective permeability refer to in cell membranes?


  It controls what enters and exits the cell
• What are the main functions of the cell membrane?


  Protection, cell signaling, and regulating transport of substances
• How does the cell membrane protect the cell?


  By controlling the entry of harmful substances
• What is mitosis?


  The process of cell division producing two identical daughter cells
• What is the purpose of mitosis?


  To allow growth, repair, and reproduction in multicellular organisms
• How does mitosis help heal a wound?


  By allowing new skin cells to form
• What are the key points about cells?

  • Cells are the basic building blocks of all living organisms
  • They can reproduce independently
  • They carry out all functions of life (metabolism, growth, etc.)
  • They contain genetic material (DNA)
  • They are surrounded by a cell membrane
• What are the key points about cell membrane structure and function?

  • Made of phospholipids with hydrophilic heads and hydrophobic tails
  • Controls what enters and exits the cell (selective permeability)
  • Described by the fluid mosaic model
  • Functions include protection, cell signaling, and regulating transport of substances