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<a accesskey="3" href="page.php?w=molecular_biology&amp;p=2">3.Next</a>
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<p><b>Molecular biology</b> is a branch of <a href="page.php?w=biology">biology</a> that seeks to understand the <a href="page.php?w=molecule">molecular</a> structures and chemical processes that are the basis of biological activity within and between <a href="page.php?w=Cell_%28biology%29">cells</a>. It is centered largely on the study of <a href="page.php?w=nucleic_acid">nucleic acid</a>s (such as <a href="page.php?w=DNA">DNA</a> and <a href="page.php?w=RNA">RNA</a>) and <a href="page.php?w=protein">protein</a>s. It examines the structure, function,</p><p>
<a accesskey="3" href="page.php?w=molecular_biology&amp;p=2">3.Next</a>
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