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Human Health and Diseases. — Bio Zoology STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12Bio ZoologyHuman Health and Diseases.3 Marks
Question
Differentiate between normal cells and cancer cells.
✓

Answer

Normal Cells:
  1. Small uniformly shaped nuclei Relatively large cytoplasmic volume
  2. Conformity in cell size and shape Cells arranged into discrete tissue
  3. May possess differentiated cell structures Normal presentation of cell surface markers
  4. Lower levels of dividing cells Cell tissues clearly demarcated
Cancer Cells:
  1. Large, variable shaped nuclei Relatively small cytoplasmic volume
  2. Variation in cell size and shape Disorganised arrangement of cells
  3. Loss of normal specialised features Elevated expression of certain cell markers
  4. Large number of dividing cells Poorly defined tumor boundaries

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