Sentences with phrase «reactive molecules created»
As congestive heart failure progresses, the formation of «free radicals» (reactive molecules created during oxygen metabolism) increases heart cell damage.
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Zwierlein's group chose to create ultracold molecules of sodium potassium, as this molecule is chemically stable and naturally resilient against reactive molecular collisions.
The cause of the damage is still poorly understood, but radiation is known to create highly reactive oxygen - containing molecules in the body.
Here, a reactive species, usually a negatively charged atom or molecule, attacks an organic molecule in a way that this molecule repels a currently bonded partner in order to create the new bond.
It's thought that this damage happens when photons (light particles) create free radicals, which are highly reactive molecules that can «poison» cells and kill them, Van Gelder said.
In a third study published online by Science on 6 April (www.sciencexpress.org), molecular geneticist Valter Longo of the University of Southern California in Los Angeles and colleagues battered a population of yeast mutants with heat or paraquat, a chemical that creates reactive oxygen molecules.
That light is absorbed by the chlorine - based molecules, which then excite nearby oxygen molecules, creating a highly reactive form of oxygen, known as singlet oxygen, that rips apart nearby biomolecules and kills the tumor cell.
More research produced the answer: Vitamin C induced what is known as a Fenton reaction, causing iron to react with other molecules to create reactive oxygen species that kill the TB bacteria.
On Pluto, ultraviolet light from the sun breaks apart gas molecules like nitrogen and methane to create reactive ions.
Physiologist Dino Giussani and colleagues at the University of Cambridge in the United Kingdom theorized that hypoxia promotes harm in the womb primarily through stress caused when the low level of oxygen creates an overload of highly reactive molecules known as free radicals.
One reason might be the role of fat in inducing oxidative stress and creating free radicals, which are highly reactive atoms and molecules that damage DNA and cellular walls, ultimately killing heart muscle cells.
This causes the body to create unstable molecules known as reactive oxygen species (ROS).
Iron creates free radicals, which are reactive molecules that attack cell walls and DNA, causing disease.
Global warming is implicated in the loss of Arctic ozone because greenhouse gases trap energy lower down, heating up the atmosphere nearer the ground but cooling the stratosphere, creating conditions conducive to the formation of the reactive chemicals that break apart the three - oxygen molecules of ozone.