Why can the words written with water-based pen be printed on the slime, but not the words written with the spirit-based pen? Because both the PVA-based slime and the water-based pen are hydrophobic. Because the PVA-based slime is hydrophobic and the water-based pen is hydrophilic. Because the PVA-based slime is hydrophilic and the water-based pen is hydrophobic. Because both the PVA-based slime and the water-based pen are hydrophilic.

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Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.