Cells: The Working Units Of Life

10 Questions

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Cells: The Working Units Of Life

Answer all questions. Each question carries 5 marks.


Questions and Answers
  • 1. 
    Which type of organelle or structure is primarily involved in the synthesis of lipids?
    • A. 

      Ribosome

    • B. 

      Lysosome

    • C. 

      Smooth endoplasmic reticulum

    • D. 

      Mitochondria

  • 2. 
    Hydrolytic enzymes must be segregated and packaged to prevent general destruction of cellular components. Which of the following organelles contains these hydrolytic enzymes in animal cells?
    • A. 

      Chloroplast

    • B. 

      Lysosome

    • C. 

      Peroxisome

    • D. 

      Central vacuole

  • 3. 
    In a plant cell, DNA may be found
    • A. 

      Only in the nucleus.

    • B. 

      Only in the nucleus and mitochondria.

    • C. 

      In the nucleus, mitochondria, and chloroplasts.

    • D. 

      In the nucleus, mitochondria, chloroplasts, and peroxisomes.

  • 4. 
    Which structure is not part of the endomembrane system?
    • A. 

      Nuclear envelope

    • B. 

      Chloroplast

    • C. 

      Golgi apparatus

    • D. 

      Plasma membrane

  • 5. 
    Cyanide binds with at least one molecule involved in producing ATP. If a cell is exposed to cyanide, most of the cyanide will be found within the
    • A. 

      Mitochondria

    • B. 

      Ribosomes

    • C. 

      Peroxisomes

    • D. 

      Nucleus

  • 6. 
    Which of the following statements is NOT part of the cell theory?
    • A. 

      All organisms are composed of one or more cells.

    • B. 

      Cells come from other cells by division.

    • C. 

      Cells are the smallest living things.

    • D. 

      Eukaryotic cells have evolved from prokaryotic cells.

  • 7. 
    All eukaryotic cells possess each of the following except
    • A. 

      Mitochondria

    • B. 

      Cell wall

    • C. 

      Cytoskeleton

    • D. 

      Nucleus

  • 8. 
    Most cells are very small. A typical eukaryotic cell, both plant and animal, will occur in which of the following size ranges?
    • A. 

      1 mm to 100 µm

    • B. 

      100 µm to 10 µm

    • C. 

      10 µm to 1 µm

    • D. 

      1 µm to 100 nm

  • 9. 
    A cell has mitochondria, ribosomes, ER and other parts. Based on this information, it could not be 
    • A. 

      A cell from a pine tree

    • B. 

      A grasshopper cell

    • C. 

      A fungal cell

    • D. 

      A bacterium

  • 10. 
    Most cell membranes are composed principally of
    • A. 

      DNA and ATP

    • B. 

      Proteins and lipids

    • C. 

      Chitin and starch

    • D. 

      Nucleotides and amino acids