Labels:bulletin board | sky | web site | window OCR: Satellite An object that orbits planet Second Law of Thermodynamics In normal processes there is loss 0 usable energy usually in the form of heat Substance material that can not be physically separated into two or more component materials with differing properties. Supernova An explosion or eruption of an older massive star Transfer RNA (tRNA) There are 64 of these RNA molecules that covalently bond with one of20 amino acids The tRNA activated with an amino acid lines up with a complementary section of mRNA (codon) to direct the production of a protein Virus Amicroscopic infectious particle composed of an outer protein coat that protects the inner genetic material Viruses are unique in that they only metabolize and reproduce within living cell Outside the cella virus remains in a state of ...
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