oxygen n. ( Symbol O ) A nonmetallic element constituting 21 percent of the ... Oxygen is extremely active chemically, forming compounds with almost all of the ...
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Reactive Oxygen Species (ROS)
Reactive oxygen species are
molecules like hydrogen peroxide (#5)
ions like the hypochlorite ion (#6)
radicals like the hydroxyl radical (#3).
The family of haem oxygenase enzymes is unique in nature for its role in haem degradation.
oxygen debt
In muscle, the cumulative deficit of oxygen that develops during strenuous exercise when the supply of oxygen is inadequate for the demand; ATP is produced anaerobically by glycolysis, ...
Oxygen element with eight protons
(oxy = sharp‚ acid; gen = bear‚ produce)
P
Palearctic Realm the biogeographical realm including Europe and northern Asia
(paleo = ancient; arctic = northern) ...
oxygenated blood
blood that has become enriched with oxygen as it exchanges with the lungs.
P ...
Oxygen-dissociation curve A plot of the oxygen-binding capacity of a protein versus the partial pressure of oxygen.
Using Oxygen to Release Energy
How are mitochondria used in cellular respiration? The matrix is filled with water (H2O) and proteins (enzymes). Those proteins take food molecules and combine them with oxygen (O2).
[edit] Oxygen transport
Basic hemoglobin saturation curve. It is moved to the right in higher acidity (more dissolved carbon dioxide) and to the left in lower acidity (less dissolved carbon dioxide)
Further information: Oxygen transportation ...
Oxygen is used by your cells as it performs the functions of life. As your body uses oxygen, your cells produce another gas known as carbon dioxide. Too much carbon dioxide can be toxic, even deadly.
Oxygen technique (primary productivity). The estimation of primary productivity by the measurement of the rate of oxygen increase
Parapatric speciation. The differentiation into distinct species of populations experiencing some gene flow ...
Oxygen is not required.
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Sunday, September 29, 1996
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Oxygen is the final electron acceptor. The low-energy electrons that emerge from the electron transport system are taken up by O2. The negatively charged oxygen molecules take up protons from the medium and form water (2H+ + 2e- + 1/2 O2 ® H2O).
oxygen An element that is one of the constituents of water, organic matter, and many other chemicals. Oxygen gas (O2), composed of two oxygen atoms, is needed for respiration and is produced by photosynthesis.
Oxygen to breathe (for use in aerobic respiration.
Medicines (to augment the body's own immune defenses)
Food (which we as heterotrophic consumers in the food pyramid need).
Drinkable water (purified by microbial activity) ...
the oxygen carrying molecule of red blood cells; it is made up of four polypeptide chains (2 alpha type and 2 beta type) and non-protein molecules called porphyrins
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition.
When oxygen is present (aerobic conditions), most organisms will undergo two more steps, Kreb's Cycle, and Electron Transport, to produce their ATP.
The free oxygen originated, as it does today, from photosynthesis where H2O is broken down to form oxygen (O2) and hydrogen ions (H+).
Reactive oxygen species One of several types of small molecules containing oxygen with an unstable number of electrons. Reactive oxygen species can damage many kinds of biological molecules.
Origin: Hydro-, 2 _ oxygen _ -yl.
Please contribute to this project, if you have more information about this term feel free to edit this page ...
Anoxic: Lacking oxygen.
Aquaculture: Fish and other organisms farmed or raised in freshwater environments.
Arrow worms: Members of the phylum Chaetognatha, a group of planktonic carnivores.
A microorganism that grows in the presence of oxygen. See Anaerobe. Agarose gel electrophoresis. A matrix composed of a highly purified form of agar that is used to separate larger DNA and RNA molecules ranging 20,000 nucleotides.
Now, the mutation does not really affect the ability of beta-globin to participate with alpha-globin and make hemoglobin, and it doesn't affect the ability to carry oxygen.
Although tumor cells are no longer dependent on the control mechanisms that govern normal cells, they still require nutrients and oxygen in order to grow.
[footnote: Thalassemia major (the most serious form) negatively affects the production of red blood cells (hemoglobin) such that the tissues have insufficient oxygen, thereby leading to anemia.
In order to carry out their activities, peroxisomes use significant amounts of oxygen.
This process releases oxygen as a waste product. Anoxygenic (or H2S) photosynthesis, using PSI, is seen in living purple and green bacteria. Oxygenic (or H2O) photosynthesis, using PSI and PSII, takes place in cyanobacteria.
The aorta is the main trunk of a series of vessels which convey the oxygenated blood to the tissues of the body for their nutrition. It commences at the upper part of the left ventricle, where it is about 3 cm.
Several elements, like oxygen and carbon, have several stable forms. Oxygen, for example, occurs in nature as 16O and 18O - these two forms are isotopes.
From providing the oxygen we breathe to the foods we eat, plants are a renewable resource upon which our existence depends. Plants, unlike animals, have not developed specific organs that see, hear, and feel various environmental stimuli.
Molecules containing Carbon in their structures are called Organic compounds; for example, the Carbon Dioxide, which is formed by one atom of Carbon and two atoms of Oxygen (CO2).
Bioenrichment. Adding nutrients or oxygen to increase microbial breakdown of pollutants.
Biofilms. See Microbial mats.
Biologics. Agents, such as vaccines, that give immunity to diseases or harmful biotic stresses.
Compound containing carbon, hydrogen, and oxygen, with twice as many hydrogens as oxygens; sugar or starch.
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These are oxygenated carotenoids that are synthesized within the plastids. Xanthophylls do not require light for synthesis, so that xanthophylls are present in all young leaves as well as in etiolated leaves.
ammonium persulfate and the reaction is accelerated by TEMED (N,N,N',N'-tetramethylethylenediamine) which catalyzes the formation of free radicals from ammonium persulfate. Acrylamide gels are generally poured between glass plates because oxygen ...
A weak electrostatic link between an electronegative atom (such as oxygen) and a hydrogen atom which is linked covalently to another electronegative atom; hydrogen bonding is what makes water stick to itself.
Deoxyribonucleic acid (DNA) ...
A carbon atom double-bonded to an oxygen and single-bonded to a hydroxyl group (OH).
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
anaerobe - organism that wants very little or no oxygen
autotrophs - organisms that need no preformed organic foods
bacterial endospores - see endospores ...
Red cells get their red color from iron-rich hemoglobin which is responsible for transporting oxygen throughout the body. These cells got THEIR red color from Photoshop(R). See animated red cells in capillaries in "OUCH!... Anatomy of a Splinter".
peroxisomes - small membrane -bounded organelle that uses molecular oxygen to oxidize organic molecules.
plastron - a specialized gill of minute hairs allowing a thin film of air to cover the body and enhance oxygen exchange with water in aquatic conditions; many insects possess plastrons, even some considered primarily terrestrial ...
a-helix: Common secondary 3-dimensional structure of proteins in which the linear sequence of amino acids is folded into a spiral that is stabilized by hydrogen bonds between the carboxyl oxygen of each peptide bond.
placenta - embryonic/maternal organ that serves nutritional and respiratory functions of the mammalian fetus. It is composed of the embryonic chorion and maternal uterine endometrium, allowing provision of oxygen and nutrients to the fetus ...
Readily formed between -OH (hydroxyl) and NH2 (amino) groups and oxygen or nitrogen atoms. They are important in proteins and are the mechanism for base-pairing in nucleic acids. They are easily disrupted by heat.
Sickle cell anemia -- an hereditary, chronic form of hemolytic anemia characterized by breakdown of the red blood cells; red blood cells undergo a reversible alteration in shape when the oxygen tension of the plasma falls slightly and a ...
 See also: Organ, Trans, Cells, Molecule, Protein
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