Smooth muscle tissue bestie ! (C)
<em>Answer:</em>
<em>van der Waals forces</em>
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<em>Method:</em>
Online, and other sources to make sure the answer is correct.
<span>The protocell's fatty acid membrane allows chemical compounds, including the building blocks of DNA, to enter into the cell without the assistance of the protein channels and pumps required by today's highly developed cell membranes</span>
