Cellular Organization and Classification Quiz
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Questions and Answers

What is a defining characteristic of animal cells compared to plant cells?

  • Presence of a cell wall
  • Chloroplasts
  • Larger size
  • Irregular shape (correct)
  • Which type of cell is known to be the earliest on earth?

  • Eukaryotic
  • Prokaryotic (correct)
  • Cyanobacterial
  • Archaeal
  • Which organelle is responsible for cellular energy exchange in eukaryotic cells?

  • Lysosomes
  • Mitochondria (correct)
  • Endoplasmic reticulum
  • Golgi apparatus
  • What is the main difference between prokaryotic and eukaryotic cells regarding their nucleus?

    <p>Eukaryotic cells have a defined nucleus surrounded by a nuclear membrane.</p> Signup and view all the answers

    Which type of cell has a cell wall in addition to a cell membrane?

    <p>Plant cells</p> Signup and view all the answers

    What is the function of cyanobacteria among prokaryotes?

    <p>Perform photosynthesis</p> Signup and view all the answers

    What is the fundamental structure of the cell membrane?

    <p>A phospholipid bilayer</p> Signup and view all the answers

    What is the main function of the cell membrane?

    <p>Selective transport of molecules</p> Signup and view all the answers

    Why are cell membranes known as semi-permeable or selectively permeable membranes?

    <p>They selectively allow certain substances to pass through</p> Signup and view all the answers

    What do proteins embedded within the phospholipid bilayer of the cell membrane do?

    <p>Carry out specific functions, including selective transport of molecules</p> Signup and view all the answers

    How does the cell membrane contribute to the protection of a cell?

    <p>By regulating the transport of materials in and out of the cell</p> Signup and view all the answers

    Which term describes the lipid bilayer of the cell membrane's ability to allow only certain molecules to pass through?

    <p>Semipermeable or selectively permeable</p> Signup and view all the answers

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