Cell Structure

• What is the role of mitochondria ?

  They carry out aerobic respiration , so provide energy for the cell to carry out chemical reactions.
• Ribosome - The site where protein synthesis occurs
• Name 3 sub-cellular structures (organelles) that are found in plant cells but not in animal cells.

  
  

  • Cell wall
  • Permanent vacuole
  • Chloroplast
• What is the role of the cytoplasm ?

  Gel-like substance where chemical reactions take place
• What is the cell - membrane and what is its role ?

  Protective barrier around the outside of the cell

  • Controls what goes in and out of the cell
• What is the prokaryotic cell wall composed of ?

  Peptidoglycan
• In plants , what is the cell wall composed of ?

  Cellulose
• What does the permanent vacuole contain ?

  Cell sap
• What are plasmids, and what are their role?

  Plasmids are small, circular loops of DNA that are separate to the main DNA. 

  They contain ‘extra genes’ that are sometimes useful to the bacteria, such as antibiotic resistance.
• Name 7 sub-cellular structures (organelles) that are found in bacterial cells.

  • Nucloid / Circular strand of DNA
  • Flagellum
  • Plasmid
  • Cell wall
  • Cell membrane
  • Ribosome
  • Cytoplasm
• Role of plant cell wall

  It provides strength and structure to the plant cell, preventing it from bursting or shrinking when water enters/leaves the cell via osmosis. 
• What is the cell ?

  A cell is the smallest unit of life that can live on its own. Cells make up all living organisms and their tissues.
• Name 5 sub-cellular structures (organelles) that are found in both animal and plant cells. 

  
  

  • Cell membrane
  • Ribosome
  • Nucleus
  • Cytoplasm
  • Mitochondria