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Arrange the following cells in the ascending order of their sizes.
i. Mycoplasma ii. Ostrich eggs iii. Human RBC iv. Bacteria
Options:
i. Mycoplasma ii. Ostrich eggs iii. Human RBC iv. Bacteria
Solution:
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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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