Polymers are large molecules composed of repeated subunits known as monomers. In the realm of biological macromolecules, there are four primary classes that are considered polymers: carbohydrates, proteins, nucleic acids, and to some extent, lipids. Carbohydrates are polymers formed of monosaccharide units, which serve as quick energy sources and structural components in cells. Proteins, made up of amino acids, perform a vast array of functions including catalysis of biochemical reactions, signaling, and forming cellular structures. Nucleic acids, which include DNA and RNA, are polymers of nucleotides that store and transmit genetic information. While not all lipids are polymers, some, like the phospholipids that make up cell membranes, have repeat units and can be considered in a broader sense. Each class of these biological macromolecules plays a unique and essential role in the structure and function of living organisms.

To create an ink bleed effect in Illustrator, start by typing your text or creating the shape you want the effect applied to. Then, go to Effect > Distort & Transform > Roughen. Adjust the settings to get a slightly irregular edge, which mimics ink bleed. Small detail and relatively high smoothness usually work well. Next, apply a Gaussian Blur (Effect > Blur > Gaussian Blur) to soften the edges further, simulating how ink disperses into the paper. Finally, experiment with the Transparency settings to achieve the desired intensity of the ink bleed effect. Optionally, use brushes with a watercolor or ink profile for more authenticity.

Chenille yarn is a soft, fuzzy yarn known for its velvety texture and unique appearance, resembling the caterpillar from which its French name, "chenille," meaning "caterpillar," is derived. This yarn is produced by wrapping short lengths of fiber around a core, which can be made of cotton, silk, rayon, or wool, creating the characteristic pile. The result is a yarn that's exceptionally plush and cozy, making it a favorite for crafting warm blankets, scarves, sweaters, and home decor items like pillows and throws. Its luxurious feel and aesthetic appeal, however, come with care considerations, as chenille can be prone to shedding and may require delicate handling during washing.