Prokarotes IB style questions - Answers

Multiple Choice Questions

  1. What is the best definition of a Nucleoid ?
    1. Organelles made of protein and RNA that direct protein synthesis.
    2. A dense region of DNA in a prokaryotic cell.
    3. The basic structural and functional unit of all organisms.
    4. A phospholipid bilayer that surrounds the cell
  2. Plasma membrane is best described as….
    1. A phospholipid bilayer that surrounds the cell
    2. Organelles made of protein and RNA that direct protein synthesis.
    3. A rigid non-cellulose structure that surrounds cells of bacteria
    4. A dense region of DNA in a prokaryotic cell.
  3. Which statement best describes a prokaryote cell wall ?
    1. Hair-like protein structures, that allow bacteria to attach to things.
    2. A phospholipid bilayer that surrounds the cell
    3. A dense region of DNA in a prokaryotic cell.
    4. A rigid non-cellulose structure that surrounds cells of bacteria
       
  4. 1 mark for the correct working
    1 mark for the correct answer (including units)

    Calculate the length of this prokaryote cell using the scale bar. (2 marks)

  5. 1 mark for each correct comparison: some examples…

    Compare the structure of a prokaryote cell with an eukaryote cell (4 marks)

  6. Prokaryote

    Eukaryote

    Nucleoid

    Nucleus

    Free Ribosomes 70s

    Free ribosomes 80s & attached ribosomes on rER

    non-cellulose wall

    plants have cellulose wall

    no membrane bound organelles

    membrane bound organelles

    eg mitochondria

    Similarities in both

    Cytoplasm,

    plasma membrane

    DNA

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