Q55 of 105 Page 141

Why could cells not be observed and studied for thousands of years ?

Most of cells are extremely small and cannot seen with naked eye, hence cells could not be observed and studied for thousands of years.


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Why are nerve cells long and have branches ?

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What is the other name of a nerve cell ?

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State the cell theory of organisms.

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Explain the function of mitocheondria in a cell.