Science / Genetics / Ribonucleic Acid (RNA): A chemical found in the nucleus and cytoplasm of cells: it plays an important role in protein synthesis and other chemical activities of the cell. The structure of rna is similar to that of dna. There are several classes of rna molecules, including messenger rna, transfer rna, ribosomal rna, and other small rnas, each serving a different purpose.
Health / Fitness / Lactic Acid: A substance caused by anaerobic training of the muscles, a build up prevents continuation of exercise, and a good example is 400 metre runners. Watch how they slow down during the last 100 metres of t MORE
Health / Vitamins / Hydroxy Acids: Substances penetrating the epidermis and upper dermis aiming to slough dead skin cells, used as anti-aging and anti-wrinkle ingredient in skin care products, the large cosmetic market based on hydroxy MORE