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Saltwater

All articles tagged with #saltwater

"Genetically modified bacteria self-destruct and clean up saltwater pollution"

Originally Published 2 years ago — by Phys.org

Featured image for "Genetically modified bacteria self-destruct and clean up saltwater pollution"
Source: Phys.org

Researchers have genetically engineered a marine microorganism, Vibrio natriegens, to break down polyethylene terephthalate (PET) plastic in saltwater. By incorporating the DNA responsible for producing enzymes that break down PET from Ideonella sakaiensis into V. natriegens, the modified bacteria were able to produce the desired enzymes on their cell surface and successfully break down PET in a saltwater environment. This breakthrough could provide an inexpensive and efficient method for addressing plastic pollution in marine environments. However, further modifications are needed to stabilize the production of plastic-degrading enzymes, enable the bacteria to feed on the byproducts, and produce desirable end products from PET.

The Thirsty Fish Myth: Debunked.

Originally Published 2 years ago — by Livescience.com

Featured image for The Thirsty Fish Myth: Debunked.
Source: Livescience.com

Fish do get thirsty, but they mostly absorb water through their skin and gills via osmosis. Saltwater fish are always thirsty and drink all the time, but they have specialized cells in their gills called chloride cells that actively push salt out of their bodies. Freshwater fish spend all their time trying to keep water out of their bodies and never drink it, but they have chloride cells that work by pulling salt into their bodies. Sharks maintain high concentrations of urea in their body to balance the incoming of water.