Sentences with phrase «oxygen environment of»

A majority of these genes are involved in metabolism and presumably allow the amoeba to use bacterial metabolic pathways to adapt to the low oxygen environment of the gut.

They can thrive in hostile spots — from the acidic, low - oxygen environment of the stomach to boiling hot springs or frozen tundra.

Newborn babies are born with an abundance of red blood cells because of the low oxygen environment of your womb.

Not exact matches

And in such an extreme environment, your body would use up all of the oxygen in your blood in about 15 seconds.

There were also rumors the new watch would complete stand - alone functions like tracking and measuring one's biometrics like heart rate and oxygen levels, as well as control aspects of one's home environment via HomeKit.

One possible strategy for making Mars habitable over the long term is to «terraform» it — manipulate its environment so, in the simplest terms, the planet warms up, ice turns into water, and plants can be introduced, which will convert the atmospheric carbon dioxide into oxygen, with the goal of creating a stable and breathable atmosphere.

The development of a «self» requires an adequate nervous system and an adequate supporting environment including oxygen, food, and the like.

The vacuum environment provides the safe atmosphere without oxygen, protecting the food from spoiling by limiting the growth of fungi or aerobic bacteria.

An ideal pepper - growing environment is one that provides optimum levels of light, heat, moisture, and oxygen.

The drug blocks the action of an enzyme that hampers not only sexual ability but also the function of the lungs in low - oxygen environments.

More iron means that plenty of hemoglobin is being produced within your red blood cells, which means your baby can develop in an oxygen - rich environment.

it regulates their oxygen level, it regulates their temperature and again, just gets them into this mode of «Okay, I am now out of this warm, liquid, dark place», and so, they are more aware of their environment and we are more aware of them too.

A good example of this is the uranyl, -LCB- UO2 -RCB- 2 + ion which is widely prevalent in the environment naturally and also nuclear waste where the two oxygen atoms reside opposite each other and are bonded very strongly to the uranium.

Aside from myriad practical applications, these organisms could exemplify the kinds of life that exist in environments where little or no oxygen exists, such as the deep ocean or under the Martian surface.

«How bacteria survive in oxygen - poor environments: Discovery could inform development of new therapies for cystic fibrosis infections.»

When tumor cells are present in an environment that lacks oxygen and nutrients, they receive a signal that it is time for the cells to move to a different part of the body.

Columbia University biologists have revealed a mechanism by which bacterial cells in crowded, oxygen - deprived environments access oxygen for energy production, ensuring survival of the cell.

Shen's own work demonstrates that the deeps of the Proterozoic ocean were full of sulfidic gases, not dissolved oxygen, and indicates that a complex natural environment, complete with a food chain and natural selection, was in place on Earth at an early date.

We know that bacterial cells have different ways of metabolizing energy in oxygen - rich environments, but for the longest time we couldn't figure out how they were doing it when oxygen is difficult to access.»

They found that the electron transport chain so critical to the conversion of electrons to energy can and is operating deep down in the oxygen - deprived biofilm and that in these environments, the bacterium depends on a specific part of the chain's terminal oxidase — a protein called CcoN4 — to access oxygen and grow normally.

They live entirely in underground tunnels and never see the sun; have long life spans for their size (30 years compared to a common rat's 4 years); feel no pain in their skin; survive and thrive in oxygen - poor environments; and are resistant to strokes and a number of diseases, cancer included.

However, the rapid burial of Dakota in a waterlogged, low - oxygen environment allowed fossilisation to outpace the normal processes of microbial decay, preserving areas of soft tissue.

Hydrogen sulphide is a widespread, extremely toxic compound in the Baltic Sea's seabed environment that is devoid of oxygen.

Excess amounts from human activities often end up in rivers, streams and coastal environments, causing algal blooms, loss of sea grass and low oxygen levels in the water, which can kill large numbers of fish and other organisms.

To mimic Titan's environment, her team combined cold nitrogen, methane, and traces of carbon monoxide and exposed the mix to microwaves (which simulate the sun's ultraviolet rays) and oxygen (which rains down on Titan from eruptions on the nearby moon Enceladus).

The finding raises the possibility that complex animal life could exist in all kinds of harsh, oxygen - free environments — on Earth and perhaps on other worlds, too.

To enable them to survive, adapt and grow in the low - oxygen or «hypoxic» environments, tumors contain increased levels of a protein called Hypoxia - inducible factor 1 (HIF - 1).

Researchers at the University of Southampton have engineered cells with a «built - in genetic circuit» that produces a molecule that inhibits the ability of tumors to survive and grow in their low oxygen environment.

Band led a previous analysis of gene expression in blind mole - rats living in low - oxygen (hypoxic) environments.

RoR dams can cause a spike in methylmercury in two ways — they can form small reservoirs, called headponds, which flood soil and create slow - flowing, low - oxygen environments; or they can create higher temperatures in the stream as a result of the reduced flow conditions when portions of the stream are diverted to the turbines.

«There are still many questions left to answer but we now know that oxygen poor environments, like those often found in advanced human breast cancers serve as nurseries for the birth of cancer stem cells,» says Gregg Semenza, M.D., Ph.D., the C. Michael Armstrong Professor of Medicine and a member of the Johns Hopkins Kimmel Cancer Center.

Semenza says scientists have long known that low oxygen environments affect tumor growth, but, in the case of advanced tumors, there was a paradox.

Perhaps more worrisome than its mouth, however, is the creature's ability to tolerate changes in the temperature, salinity and even oxygen level of its aquatic environment.

Support for the idea that isolated low - oxygen environments may be preferred niches for early life comes from observations that anaerobic niches deep within Earth's crust tend to harbor ancient branches within the domains of life.

A unique version of the EPAS1 gene, which regulates blood hemoglobin, allows Tibetans to live without difficulty in oxygen - thin environments above 13,000 feet.

As caterpillars grow, they take on a characteristic chemical signature of the environment, with hydrogen, oxygen and other elements fixed in tissues in varying amounts.

Lead author Rich Brill, a fishery biologist with NOAA's National Marine Fisheries Service and adjunct faculty at VIMS, says «The notion that blue crabs are relatively intolerant of oxygen - poor waters was counterintuitive, because this species often occupies estuarine environments that can become hypoxic even in the absence of human activities.»

Oil and gas result mostly from the rapid burial of dead microorganisms in environments where oxygen is so scarce that they do not decompose.

«This polymer turns blue when photo - irradiated in the presence of certain electron donors in an oxygen - free environment,» said the scientists.

However, in a hypoxic environment, it is activated and initiates a series of events to combat physiological effects of low oxygen.

By contrast, environments that imitate the inside of a uterus continue delivering oxygen to the fetus via the umbilical cord, or directly into the arteries, which could avoid the lung damage.

They tested how good the geese were at coping with exercise in reduced oxygen environments by simulating the conditions of Mount Everest in a clear box and then getting the birds to run as fast as possible on a treadmill inside the box.

Dr Hawkes, formerly of Bangor University, added: «The wider implications of these findings are for low oxygen medical conditions in humans, such as heart attack and stroke — suggesting what adaptations might help prevent problems in the first place and learning how animals have managed to cope with really extreme environments.»

Species living in coastal regions could face a significant future threat from reduced levels of oxygen in the marine environment, according to research published in Scientific Reports.

Girguis also rigged up filters to adjust the concentrations of hydrogen sulfide, nitrate, oxygen, and carbon dioxide in the cylinders to match the worms» natural environment.

This series of reactions can be anaerobic, so more suited to their typically low - oxygen environment, but also provides the supply of metabolic intermediates necessary for rapid growth and division.

It was important to make the calculations for a wide variety of cases, because the non-biological production of oxygen is subject to both the atmospheric and stellar environment of the planet.

Importantly, our study suggests that, by focusing research exclusively on adults, it is likely that we will underestimate the number of species vulnerable to decreasing levels of oxygen in the marine environment.»

The observations, coupled with measurements of sulfide and oxygen in the environments, suggest that the gill bacteria in bivalves break down sulfide around the roots of the grasses, letting them grow.

The team examined the chemical reactions that could lead to the formation of water within the oxygen - poor environment of early molecular clouds.