Question
Name the smallest and the largest cell.
Name the smallest and the largest cell.
The smallest cell is mycoplasma or PPLO. Its size is 0.1 to 0.5mm (micrometre). Ostrich egg is the largest cell measuring about 170 × 135mm in diameter.
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A person has a hearing range from 20Hz to 20kHz. What are the typical wavelengths of sound waves in air corresponding to these two frequencies? Take the speed of sound in air as 344ms–1 .