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The Respiratory System.
The Respiratory System.

... • The primary organs of the respiratory system are lungs, which carry out this exchange of gases as we breathe. • According the America Lungs association red blood cells collect the oxygen from the lungs and carry it to the parts of the body where it is needed. During this process, the red blood cel ...
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...  Commonly known as throat; passageway for food and air  5 inches long and subdivided into nasopharynx (connected to ...
PDF Fulltext
PDF Fulltext

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Sulfur
Sulfur

... o Formation of iron sulfide or manganese sulfide helps prevent toxicities of these essential elements o Sulfide ions also hydrolyze in water forming H2S (hydrogen sulfide) which is given off as a gas that smells like rotten eggs .. common in swampy or marshy waterlogged areas. o Reduction of S to S2 ...
Polyatomic Ions (Memorize for Wednesday, January 31
Polyatomic Ions (Memorize for Wednesday, January 31

... CHEMICAL NOMENCLATURE Oxidation Numbers (similar to valence electrons) Group 1 = +1 Group 2 = +2 Groups 13-18 = group # - 10 for most elements d-block elements must be looked up (groups 3-12 use roman numerals) oxidation numbers for ALL compounds MUST equal zero Metal-Non-metal (binary ionic compoun ...
Role of inducible NO synthase in cell signalling
Role of inducible NO synthase in cell signalling

... expression are still poorly understood, and an ultimate ‘NOresponsive promoter element’ has yet to be identified. However, increasing evidence is accumulating that NO preferentially alters transcription factors that are sensitive to changes in the cellular oxidation–reduction (redox) status. At leas ...
Topic 3&4 Atoms and the per.table
Topic 3&4 Atoms and the per.table

... iron and carbon dioxide. This reaction is shown by the following equation which is not balanced. Fe2 O3 + CO  Fe + CO2 Rewrite this as a balanced equation. Fe2 O3 + Standard Grade Chemistry ...
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... such absurd stuff and I was determined to see what this meant. Copper was more or less familiar to me, for copper cents were then in use. I had seen a bottle marked nitric acid on a table in the doctor's office where I was then "doing time." I did not know its peculiarities, but the spirit of advent ...
Nutritional Pattern Among Orgnaisms
Nutritional Pattern Among Orgnaisms

... microbes for synthesis of cellular materials • Protein synthesis nitrogen and sulfur • DNA or RNA synthesis nitrogen, Many bacteria derive nitrogen by decomposing protein phosphorus • ATP synthesis nitrogen and phosphorus • Some bacteria ammonium ions in organic material • nitrogen from nitrates • N ...
1 1. Give two reasons why a luminous flame is not used for heating
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... a) Define the term molar enthalpy of combustion of a compound 1mk*UG* b) Calculate the molar enthalpy of formation of butane C4H10 from its elements in their normal states at standard temperature and pressure. 2mks*UG* When calcium carbonate was added to a solution of dry hydrogen chloride in methyl ...
Zdroje volných radikál* ROS
Zdroje volných radikál* ROS

... Proteins which bind transition elements Fe and Cu = inactivation of these elements for catalysis • transferrin – binds Fe3+ in blood • lactoferrin – binds Fe3+ in leukocytes • ferritin – intracellular, storage of Fe in the cell • haptoglobin – uptake of extracellular hemoglobin • ceruloplazmin – bin ...
Reactive Oxygen Species
Reactive Oxygen Species

... A scheme of the catalytic cycle of cytochrome P450-containing monooxygenases. The binding of the substrate (RH) to ferric P450 (a) results in the formation of the substrate complex (b). The ferric P450 then accepts the first electron from CPR (cytochrome P450 reductase), thereby being reduced to the ...
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Populations and their Ecosystems
Populations and their Ecosystems

... sulfur atoms. Sulfur is important for the functioning of proteins and enzymes in plants, and in animals that depend upon plants for sulfur. Plants absorb sulfur when it is dissolved in water. Animals consume these plants, so that they take up enough sulfur to maintain their health. Most of the earth ...
CH30S Chemical Reactions Part 2 Unit Review
CH30S Chemical Reactions Part 2 Unit Review

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Biology 2

... Where does oxygen enter the blood? Where does oxygen exit from the blood? Where does carbon dioxide enter the blood? Where does carbon dioxide exit from the blood? In the diagram, what two types of vessels are high in oxygen? In the diagram, what two types of vessels are high in carbon dioxide? ...
The respiratory system
The respiratory system

... and the nose. This oxygen then passes to the pharynx (throat), then to the larynx (voice box) and enters the trachea; a tube that enters the chest cavity. In the chest cavity, the trachea splits into two smaller tubes called the left and right bronchus (plural-bronchi). Each bronchus then divides ma ...
Carbon dioxide concentrations
Carbon dioxide concentrations

... Effect – the lower the partial pressure of oxygen and saturation of it in hemoglobin, the more carbon dioxide can be carried in the blood Oxygen unloading from hemoglobin molecules ...
homework assignment 2 - the Petersen Home Page
homework assignment 2 - the Petersen Home Page

... obtained. Calculate the atomic weight and determine the identity of the element X. 4. Cyclist Floyd Landis was recently disqualified as the 2006 champion of the Tour de France because of a higher than normal level of the male hormone testosterone found during subsequent drug tests. Testosterone cont ...
The Digestive System
The Digestive System

... • When we breathe in Carbon monoxide, it takes the place of oxygen on the red blood cells • Since RBC’s cannot carry oxygen, the tissues in the human body start to malfunction • The brain relies on oxygen and is one of the first organs affected • You will feel nausea, head aches, loss of consciousne ...
Chapter 22 Respiratory System
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... • Oxygen from the lungs to the capillaries (cells) • Carbon dioxide from the capillaries to the lungs (cells) ...
Biochemistry Midterm Review
Biochemistry Midterm Review

... walls of plants and exoskeletons of insects and crustaceans. They are made of smaller subunits called monosaccharides. Monosaccharides have carbon, hydrogen, and oxygen in a 1:2:1 ratio. Monosaccharides or simple sugars include glucose, galactose, and fructose. Although their chemical formulas are t ...
Molecules to metabolism
Molecules to metabolism

... terms of the chemical substances involved - Carbon atoms can form four bonds allowing a diversity of compounds to exist - Life is based on carbon compounds including carbohydrates, lipids, proteins and nucleic acids - Metabolism is the web of all the enzyme catalyzed reactions in a cell or organism ...
BITSAT Chemistry
BITSAT Chemistry

... velocity and root mean square of a gas at a particular A mixture of C6H6 and excess H2 has a pressure of 60 mm of Hg in an unknown volume. After the gas had been passed over a nickel catalyst and all the benzene converted to cyclohexane, the pressure of the gas was 30 mm of Hg in the same volume at ...
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Gaseous signaling molecules

Gaseous signaling molecules are gaseous molecules that are either synthesised internally (endogenously) in the organism, tissue or cell or are received by the organism, tissue or cell from outside (say, from the atmosphere or hydrosphere, as in the case of oxygen) and that are used to transmit chemical signals which induce certain physiological or biochemical changes in the organism, tissue or cell. The term is applied to, for example, oxygen, carbon dioxide, nitric oxide, carbon monoxide, hydrogen sulfide, sulfur dioxide, nitrous oxide, hydrogen cyanide, ammonia, methane, hydrogen, ethylene etc.Many, but not all, of gaseous signaling molecules are named gasotransmitters.The biological roles of each of the gaseous signaling molecules are in short outlined below.
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