One of the opponents of the movie monster Godzilla is Mothra, a giant mothlike creature with a wingspan of several dozen meters. The largest known insects were Paleozoic dragonflies with half-meter wingspans. Focusing on respiration and gas exchange, explain why giant insects are improbable.
Lab #4 DNA Profiling Lab 1. Supernatant: denoting the liquid lying above a solid residue after crystallization, precipitation, centrifugation, or other process 2. Soap: destroying all cell membranes, allowing the cell contents to spill out (cell lysis). 3. DNA is only soluble at a pH near physiological levels. The baking soda serves as a buffering system that raises the pH and releases the DNA from bound proteins. 4. The meat tenderizer: is an enzyme (proteinase) that removes proteins bound to the DNA and destroys enzymes (endonucleases) which would chew up the DNA. 5. Since the supernatant is thick from the cellular contents, carefully pouring the alcohol on top of the supernatant leaves two distinct layers.
