The term "killing" acrylic yarn refers to a process by which the fabric made from acrylic yarn is exposed to heat, causing the fibers to relax and the material to become permanently softer and drapier. This technique is particularly useful for projects where a softer texture and more fluid drape are desired, such as scarves or blankets. However, it's irreversible and should be done cautiously, typically with a steam iron and a protective cloth barrier to avoid direct contact with the yarn. While this can enhance the finished project's feel and appearance, it may not be suitable for all items, especially those requiring structure or elasticity.

Removing epoxy from jewelry requires gentle care to avoid damage. Start by soaking the piece in warm, soapy water to loosen the epoxy. If this doesn’t work, applying acetone (nail polish remover) with a cotton swab can help dissolve the adhesive, but ensure the jewelry material can withstand acetone to avoid damage. Use a soft-bristled toothbrush for stubborn residues. For delicate jewelry, it’s best to consult a professional to prevent harm to the piece or diminish its value. Always wear gloves when handling chemicals.

Amino acids are catabolized into metabolites that can enter the Krebs cycle (also known as the citric acid cycle or TCA cycle) through deamination, which removes the amino group, leaving a carbon skeleton. This process typically involves transamination, transferring the amino group to alpha-ketoglutarate, forming glutamate, which then undergoes oxidative deamination to release the amino group as ammonia and regenerate alpha-ketoglutarate. The remaining carbon skeletons are converted into various intermediates like acetyl-CoA, succinyl-CoA, fumarate, and oxaloacetate, depending on the amino acid. These intermediates then enter the Krebs cycle, where they are oxidized to produce ATP, NADH, and FADH2, essential for cellular energy. This pathway is crucial for energy production, especially in fasting states or dietary protein metabolism.