DNA, or deoxyribonucleic acid, is a long chain molecule that plays a central role in life on earth. The information encoded in strands of DNA controls the genetic makeup of organisms. The DNA molecule has a backbone of sugars and phosphate groups off of which hang simpler units called nucleotide bases.
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There are a variety of ways in which bacteria can be harmful, the primary one being direct pathogenesis of humans. Bacteria can infect and damage human tissues through several different mechanisms. Many bacteria secrete toxins, which allow them to kill competitor bacteria and/or damage eukaryotic cells, thus gaining a competitive advantage.
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Melatonin (<span>also known as N-acetyl-5-methoxy tryptamine)</span>
A plastic bag so that it can be cleanly put in
