Question

which one of the following bone cells would have the greatest number of lysosomes?

a osteoblasts
b osteoclasts
c osteocytes
d osteogeniccells
e stem cells

Explanation:

Identify the cellular function of lysosomes

Lysosomes are organelles containing digestive enzymes responsible for breaking down waste materials, foreign debris, and cellular components. In the context of bone tissue, cells that actively resorb, dissolve, and degrade the mineralized bone matrix require a high concentration of lysosomal enzymes to perform extracellular digestion.

Analyze the roles of the listed bone cells

We evaluate the primary function of each cell type:

• Osteoblasts: Responsible for bone formation and synthesizing the organic osteoid matrix. They are highly active in protein synthesis, not degradation.
• Osteoclasts: Large, multinucleated cells responsible for bone resorption (remodeling and breakdown). They secrete lysosomal enzymes and acids onto the bone surface to dissolve the mineral and organic components.
• Osteocytes: Mature bone cells housed in lacunae that maintain the bone matrix and act as mechanosensors.
• Osteogenic cells: Undifferentiated stem cells that divide to produce osteoblasts.
• Stem cells: General precursor cells with no specialized resorptive function.

Connect lysosome abundance to cell function

Because Osteoclasts are specialized for the enzymatic breakdown and resorption of bone matrix, they require a vast number of lysosomes and lysosomal enzymes (such as acid phosphatase) to dissolve the collagen fibers and organic matrix of bone. Therefore, osteoclasts have the greatest number of lysosomes among the options.

Answer:

• A Osteoblasts
• B Osteoclasts (Correct answer)
• C Osteocytes
• D Osteogeniccells
• E Stem cells