Human egg cell
But human egg cell is the one of the largest cells in the human body that can be seen with naked eye. i.e we are able to see it without the help of a magnification device. The size of this cell is about 0.12 mm in diameter.
The answer is nitrogen fixation.
Hope this helps
RNA polymerase is the enzyme that connects and proofreads them.
Lymphocytes is the answer.
Bacteria, archaea, fungi, algae