merge in changes from intro-biological-context

index.html

@@ -85,10 +85,14 @@ <h3>
                         Fundamental cellular processes such as endocytosis, cell motility, and cytokinesis are reliant on a cell's ability
                         to produce force. The actin cytoskeleton plays a central role in force production in these processes.
                     </p>
+                    <p>
+                        Actin filaments bend and twist in response to mechanical forces, storing elastic energy. Bent actin filaments 
+                        are found in diverse cellular structures, where this elastic energy can be used to do mechanical work. 
+                    </p>
                     <p>
                         The helical structure of actin filaments results in the coupling of filament twisting and bending,
-                        which impacts the structure of the actin network in 3D space.
-                        This has implications for actin's function in force production and maintainance of subcellular structures.
+                        which impacts the geometry of the actin network in 3D space. This influences how actin networks respond to 
+                        and participate in subcellular force production.
                     </p>
                     <p class="todo">
                         [TODO: write captions including references]