Cell Biology

• What are Eukaryotes and give an example?

  A type of cell that has a nucleus.

  (Animal and Plant Cells)
• What is a prokaryotic cell and give an example?

  A simple cell that does not have a nucleus – the DNA is free in the cytoplasm.

  (Bacteria cell)
• What is the definition of magnification?

  How many times larger the image is than the object
• What is the pathway of light through a microscope?

  Light source ➔ stage ➔ microscope slide ➔ object ➔ objective lens ➔ body tube ➔ eyepiece lens ➔ eye
• Name 3 sub-cellular structures that are in Plant cells but not Animal Cells?


  Cell wall, Vacuole, Chloroplasts
• What are plasmids?


  Plasmids are small, circular loops of DNA that are separate to the main DNA.
• Differences between Eukaryotic and Prokaryotic Cells?


  1. Eukaryotic Cells are much larger
  2. Eukaryotic cells contain membrane bound organelles
  3. Eukaryotic cells keep their DNA in form of chromosomes but Prokaryotic cells have their DNA loose.
• Which type of cell divides via binary fission?

  Bacteria
• Three conditions that bacteria require to grow?

  1. Warm
  2. Moisture
  3. Plenty of nutrients
• Describe the steps of Binary Fission?


  1. Bacteria grows and reproduces genetic material
  2. Circular strands of DNA pulled to each side of the cell
  3. A cell wall begins to form down the middle of the cell
  4. Cells are pulled apart forming two offspring cells.