Different cells have different sizes. Arrange the following cells in an ascending order of their size. Choose the correct option among the followings
i. Mycoplasma, ii. Ostrich eggs
iii. Human RBC, iv. Bacteria

Options

A. I, IV, III, II
B. I, II, III, IV
C. II, I, III, IV
D. III, II, I, IV

Explanation

To arrange the given cells in ascending order of their size, we need to first identify the approximate sizes of each cell type mentioned in the question:

1. **Mycoplasma**: This is the smallest known cell, with a size of about **0.3 micrometers (μm)**.
2. **Bacteria**: The size of bacterial cells typically ranges from **0.5 to 5 micrometers (μm)**, but for this comparison, we can consider an average size of about **1 to 2 micrometers (μm)**.
3. **Human Red Blood Cells (RBC)**: Human RBCs have a diameter of approximately **7 micrometers (μm)**.
4. **Ostrich Eggs**: The ostrich egg is the largest cell, measuring about **15 x 13 centimeters (cm)**, which is equivalent to **150,000 micrometers (μm)**.

Now, let's arrange these cells in ascending order based on their sizes:
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