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Question: Answered & Verified by Expert
Arrange the following cells in the ascending order of their sizes.

i. Mycoplasma ii. Ostrich eggs iii. Human RBC iv. Bacteria
BiologyCell - The Unit of LifeNEET
Options:
  • A i, iv, iii & ii
  • B i, iii, iv & ii
  • C ii, i, iii & iv
  • D iii, ii, i & iv
Solution:
2616 Upvotes Verified Answer
The correct answer is: i, iv, iii & ii
Mycoplasmas, the smallest cells, are only 0.3 μm in length, while bacteria could be 3 to 5 μm. The largest isolated single cell is the egg of an ostrich. Among multicellular organisms, human red blood cells are about 7 μm in diameter.

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