"Oxygen" Essays and Research Papers


 Oxygen – Carbon dioxide Cycle The Carbon Dioxide- Oxygen Cycle relates to the relationship between Carbon Dioxide [CO2] breathing plants and Oxygen [O2] breathing life forms. All oxygen-breathing life forms take in Oxygen and exhale CO2. Plants take in the CO2 and use it in their photosynthesis process and in turn give off oxygen. The Carbon Dioxide-Oxygen Cycle is a continuously occurring process whereby animals inhale Oxygen and then exhale carbon dioxide, and plants use the CO2 and "exhale"...

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oxygen cycle

Oxygen Cycle Required for Life  All living things use oxygen or depend on organisms that use oxygen in some way. All Animals and Other Consumers Use Oxygen  We use oxygen to break down simple sugar and release energy.  This can be done through respiration or fermentation.  Animals mainly use respiration. Respiration  The process that breaks apart simple food molecules to release energy.  It occurs inside cells.  What YOU do with the oxygen...

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Oxygen and Trees

medicinal products such as quinine and eucalyptus. In fact, most of the medicines that we use ultimately come to us through trees and vegetation. Trees play an important role in purifying the air around us. They breathe in carbon dioxide and breathe out oxygen that sustains our life. Thus they make this world a better place to live in. Trees are also very necessary for having good rainfall. The trees attract rain bearing clouds and prevent soil erosion and conserve the earth. Our Government also realised...

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Oxygen and Oxidation

REDUCTION Oxygen makes up only about 20% of the air, yet is the essential component for so many reactions. Without it fuels would not burn, iron would not rust and we would be unable to obtain energy from our food molecules through respiration. Indeed animal life on the planet did not evolve until a certain concentration of oxygen had built up in the atmosphere over 600 million years ago. The term oxidation has been in use for a long time to describe these and other reactions where oxygen is added...

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Oxygen and Reaction

Observations: Part I: Reaction between iron and oxygen Appearance of steel wool after 20 minutes From (relatively) shiny metal strips to not-so-shiny strips that are stained with dark, reddish-brown stuff. Part II: Decomposition of hydrogen peroxide Appearance of potato and hydrogen peroxide combination: Lots of white, foamy bubbles around the potato slices. Day 2 Observations: Part III: Reaction between zinc and acetic acid Appearance of penny in vinegar after...

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Oxygen and Ibuprofen

slightly positive end and a slightly negative end. This allows the drug to have a permanent dipole moment. The diagram below explains how the oxygen in this molecule is also the most electronegative atoms. The molecule also contains a double bond. These properties are made evident on the density surface and with the dipole moment. The reddest area is at the oxygen molecules and the double bond. The dipole moment arrow also points in the direction of these atoms. Ibuprofen dipole moment is 4.69 Debye...

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Work Rate and Oxygen Uptake

The Relationship Between Work Rate And Oxygen Uptake During Incremental Submaximal Exercise Introduction Oxygen uptake () describes the rate at which oxygen is utilized by tissues (Burton et al, 2004). is determined by heart rate (heart beats each minute), stroke volume (the volume of blood pumped from one ventricle each beat) and arteriovenous oxygen difference (difference in blood-oxygen content between arterial and venous blood). Oxygen is needed for respiration, the chemical process that...

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Oxygen Requirements of Bacteria

Oxygen Requirements of Bacteria BACKGROUND  The GasPak system is useful for culturing anaerobic bacteria on standard microbiological media because the GasPak generates carbon dioxide and hydrogen. The hydrogen will combine with oxygen present in an anaerobic jar to produce water. This system can reproducibly attain oxygen levels in the parts per million range if used correctly. This is the best method for determining the oxygen requirements of unknown organisms.  A candle jar is useful...

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Phosphates and Dissolved Oxygen

waters, such as lakes and streams. Phosphates are essential to aquatic plant growth, but too much phosphate can lead to the growth of algae and results in an algae bloom. Too much algae can cause a decrease in the amount in dissolved oxygen in the water. Oxygen in water is affected in many different ways by phosphates Phosphorus is usually present in natural waters as phosphate(Mcwelsh and Raintree, 1998). Phosphates are present in fertilizers and laundry detergents and can enter the water from...

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Cyanobacteria: Oxygen and Aerobic Respiration

use it to produce nutrients for the cell. During this process, water molecules are broken down into oxygen and hydrogen atoms which are then released in the air. In the very early days of life, Earth was populated only by anaerobic bacteria that didn’t need oxygen to survive. When cyanobacteria first made their appearance and started engaging in their photosynthetic reactions, large amounts of oxygen were suddenly released in the atmosphere. This lead to what is known as the Great Oxygenation Event...

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Hypoxia: Procedures Don Oxygen

HYPOXIA Introduction Hypoxia is simply a lack of oxygen at the tissue level of the body due to a decreased partial pressure of oxygen in the inspired air. Hypoxia is serious, because it may lead to death. Diseases of the blood, the heart and circulation, and the lungs may all produce some form of hypoxia. There are four types of hypoxia: (1) the hypoxic type, in which the oxygen pressure in the blood going to the tissues is too low to saturate the haemoglobin; (2) the anaemic type, in which...

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Oxygen and Significant Figures

warfarin (a carbon-hydrogen-oxygen compound), which consists of 74.01% C and 20.76% O by mass. 8) Selenium forms two oxides. One has 28.8% O by mass and the other has 37.8% O. What are the formulas of these two oxides? 9) Adenine is a carbon-hydrogen-nitrogen compound with 44.45% C and 3.73% H by mass. It’s molecular mass is 135.14 u. What is its molecular formula? 10) Combustion of a 0.312 g sample of a carbon-hydrogen-nitrogen compound, in an excess of oxygen, yields 0.458 g CO2 and...

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Oxygen and Carbon Dioxide

capacity so alkalinity is not usually of concern for most seawater and brackish water aquaculturists. 2. Biochemical oxygen demand ( and COD) It is a measure of the amount of oxygen required by bacteria, algae, sediments and chemicals over a set period of time. BOD is of importance in aquaculture because microbial degradation of organic matter is a major sink for dissolved oxygen, a highly important parameter for aquaculture. Aquaculture operations should not utilise waters which are polluted with...

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Oxygen Cycle

Oxygen cycle From Wikipedia, the free encyclopedia Jump to: navigation, search The oxygen cycle. The Oxygen cycle is the biogeochemical cycle that describes the movement of oxygen within its three main reservoirs: the atmosphere (air), the total content of biological matter within the biosphere (the global sum of all ecosystems), and the lithosphere (Earth's crust). Failures in the oxygen cycle within the hydrosphere (the combined mass of water found on, under, and over the surface of a planet)...

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Oxygen and Lead Acetate

Date: 9th February, 2011 Title: Analysis of the Elements present in Organic Compounds Aims: To test the presence of Carbon, Hydrogen, Oxygen, Nitrogen and Sulfur in Organic Compounds Introduction: Organic Compounds can be considered as any compound containing carbon atoms covalently bonded with other atoms, usually hydrogen. Other atoms may include oxygen, nitrogen, sulfur…etc. They can be found in nature, since “organic” means present in, or derived from, plants and animals. Materials/...

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Oxygen Bearing Compounds

Analysis of Oxygen Bearing Organic Compounds James Matthew Jocson*, Gianvittorio Lanta, Chiqui Ann Llamado, Jeron Manaig College of Science Department of Biology University of Santo Tomas, Manila, Philippines Abstract Five oxygen-bearing organic compounds were given namely Methanol, 2-propanol, tert - butanol, formalin, and acetone. Different tests were done to each sample to differentiate their characteristics. These test were Dichromate test, Tollens Test, DNPH test, Iodoform Test, and...

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Analysis of Oxygen Bearing Compunds

Analysis of Oxygen bearing Organic compounds Abstract The Unknown sample in the experiment can be tested to yield results such as 1° (primary), 2° (secondary), 3° (tertiary) alcohols. Tests such as the dichromate test, Tollen’s test, Lucas test, DNPH test and iodoform test would be very useful in determining the type of alcohol that the unknown sample belongs to. In the experiment, the unknown sample underwent series of testing to identify what property of alcohol it belonged to and the result...

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The Carbon-Oxygen Cycle

THE CARBON OXYGEN CYCLE ROLE PLAY SCRIPT Narrator-Angela Narra-Czarina Cloud-Maureen Manggo-Carlos Car-Carlo Acacia-Carissa Animal-Josephine Narrator: Good afternoon block mates and Ma’am Claire. We are here to present you a role play about the carbon oxygen cycle. Let me first introduce to you the characters. [Characters from the middle back will step forward and play their roles.] First, Josephine as “Josepig”, Maureen as “Cloudreen”, Carlo as “Honda car-lo”, and the tree-yos;...

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Oxygen Sensor

Oxygen sensor invention could benefit fisheries to breweries | MSU News... 1 of 1 http://news.msu.edu/story/9168/ News Site Oxygen sensor invention could benefit fisheries to breweries Contact: Layne Cameron, University Relations, Office: (517) 353-8819, Cell: (765) 748-4827, layne.cameron@ur.msu.edu Published: April 04, 2011 E-m ail Editor ShareThis EAST LANSING, Mich. — Monitoring oxygen levels in water has applications for oil spills, fish farming, brewing beer and more...

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Metallurgy: Oxygen and Ore

SiO2 → FeSiO3. (b) Reduction of oxide to the metal Reduction of the metal oxide usually involves heating it with some other substance acting as a reducing agent (C or CO or even another metal). The reducing agent (e.g., carbon) combines with the oxygen of the metal oxide. MxOy + yC → xM + y CO. Hydrometallurgy Leaching: (agents; NaOH, Hcl, H2So4) Usually done for low grade ores. Leaching is often used if the ore is soluble in some suitable solvent. The following examples illustrate the procedure:...

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Oxygen Oxygen and its compounds play a key role in many of the important processes of life and industry. Oxygen in the biosphere is essential in the processes of respiration and metabolism, the means by which animals derive the energy needed to sustain life. Furthermore, oxygen is the most abundant element at the surface of the Earth. In combined form it is found in ores, earths, rocks, and gemstones, as well as in all living organisms. Oxygen is a gaseous chemical element in Group VA of the periodic...

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On the periodic table, oxygen is the 8th element. It is located in period 2 and group 16. Oxygen is classified into many things. For example, on the periodic table, oxygen is classified as a nonmetal gas with an atomic number of 8 and atomic weight of 15.9994. In addition, it has 6 valence electrons. The symbol of oxygen is O and oxygen has 8 protons, 8 neutrons, and 8 electrons. The electron configuration of oxygen is 1s2, 2s2, 2p4. Oxygen had been produced by several chemists prior to its discovery...

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Modified Winkler Method for Dissolved Oxygen Determination

Modified Winkler method for dissolved oxygen determination Abstract In this study the group has determined the presence of oxygen in sample through a modified winkler method. The amount of oxygen is determined through a series of reaction. A body of water can sustain life if dissolved oxygen is sufficed. Depletions in dissolved oxygen can cause major shifts in the kinds of aquatic organisms found in water bodies. Introduction The amount of dissolved oxygen present in water or wastewater is...

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Study of Oxygen Consumption to Measure Energy Metabolism in Mammals

Study of Oxygen Consumption to Measure Energy Metabolism in Mammals Brianne Simonsen Lab Section 8 4 Oct. 2005 Abstract In this experiment the oxygen consumption of a mouse in environments of varying temperatures was studied. The hypothesis behind this experiment was that more oxygen would be consumed at a lower temperature to maintain body heat. To measure the rate of oxygen consumption a mouse was given a specific amount of oxygen. The amount consumed in a specific time was measured...

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Oxygen Study Guide

Quinnipiac University Diagnostic Imaging RS 298L Oxygen Delivery Systems - Review Assignment NAME: _______Erika Barnett______________ 1. Adequate oxygen is essential to ___life_____. 2. Oxygen cannot be stored in the body; supply from external environment must be ____obtained___________. 3. Lungs supply oxygen and remove ___Carbon Dioxide_____. 4. A major supply of oxygen is carried in combination with ____hemoglobin____________. 5. Effectiveness of pulmonary function is...

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The Mechanism of Carbon Dioxide and Oxygen Exchange in the Respiratory of Human

Title: the mechanism of carbon dioxide and oxygen exchange in the respiratory of human Abstract The purpose of the experiment is to determine gas exchange activity in the respiratory system of human. The first lab for comparing the room and breathe temperature was to understand the function of the nasal cavity where the gas passed after an inhalation. The second lab for changing of chest circumference and abdomen circumference between inspiration and expiration was to know how the air moved in...

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Oxygen Molecule Journey Through the Respiratory System

Through the Respiratory System By: Carmen Ventura Hi, my name is Roscoe. Let me tell you about my journey. Carmen Ventura KINE-1306 Professor Bustamante Roscoe’s Journey through the Respiratory System Hi my name is Roscoe and I am an oxygen cell. I was told by my grandfather Gene that I was a very important cell. He told me that when someone takes a breath they take in all types of molecules in the air including myself. My grandfather was a very wise man and whenever he talked I listened...

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Determination of the amount of dissolved oxygen in a water sample by iodonmetry-the winkler's method

Topic : Determination of the amount of dissolved oxygen in a water sample by iodometry-the winkler’s method. Objective: To determine the amount of dissolved oxygen in a water sample by iodometry- the winkler’s method. Apparatus: volumetric pipette, 3 conical flask, burette, burette clamp, Pasteur pipette, reagent bottle, conical flask stopper, retord stand, white tile Materials: 2 ml manganese sulphate solution, 2 ml alkaline-iodine solution, 0.025M sodium thiosulphate solution, 2ml concentration...

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Hyperbaric Oxygen Therapy

Speech Communications, SPCH ORBC-MW06 22 March 2010 Hyperbaric Chambers and Oxygen Therapy: Life Saver Specific Purpose: To inform audience of hyperbaric chambers and the oxygen therapy that they provide. Central Idea: The description of a hyperbaric chamber, the oxygen therapy process, the illnesses it treats and the side effects. Introduction I. Oxygen, one of the most important elements without which life would not exist. Without...

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DECISIONS SERIES Oxygen Saturation A Guide to Laboratory Assessment BY SHANNON HAYMOND, PHD uman life depends on the oxygen transport by hemoglobin. In healthy patients, the majority of molecular oxygen (O2) is bound to hemoglobin and only a small fraction is dissolved in blood. But in patients with respiratory problems or certain metabolic and genetic disorders, the fraction of oxygenated hemoglobin can fall to dangerously low values. Therefore, laboratory assessment of oxygen saturation (SO2)—the...

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Dissolved Oxygen and Primary Productivty Lab

 AP Biology Dissolved Oxygen and Aquatic Primary Productivity Purpose: To measure and analyze the primary productivity of natural waters of laboratory cultures using screens to simulate the decrease of light with increasing depth. Background: Dissolved oxygen (DO) is how oxygen is measured. Oxygen is required in cellular respiration, so it is very important for aquatic life. When more oxygen is consumed than is produced, dissolved oxygen levels decline and some animals could die if they...

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Concentration Affects the Rate of Oxygen Production When Raw Liver (Catalyse), and Hydrogen Peroxide Is Mixed

100 180 100 100 100 Modifications The results from my preliminary experiment show that 100 cm3 of oxygen has been produced in the first 30 seconds.. This reaction is far too quick and will prevent me from analysing the effects different substrate concentrations have on enzymes if I decide to continue. I will therefore lower my yeast concentration to 1%. I will also measure the volume of oxygen produced every 15 seconds, instead of every 30 seconds. This will make my results more reliable and allow...

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The Affects of Temperature on Amount of Oxygen, Mung Beans (Vigna Radiata) Consume During Cellular Respiration

Title: Amount of Oxygen, Mung Beans (Vigna Radiata) Consume during Cellular Respiration Introduction: Cellular respiration is a catabolic reaction that refers to the process of converting chemical energy of organic molecules into a simplify form so it can be used immediately by organism. Glucose may be oxidized completely if sufficient oxygen is available, by the following equation: C6H12O6 + 36 ADP + 36Pi + 6O2(g) 6 H2O + 6 CO2(g) + 38 ATP + heat All organisms, including plants and...

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51635425 Experiment 9 Results And Discussion Report Redox Titration Winkler Method For Dissolved Oxygen Determination

Discussion Report 9: Redox Titration: Winkler Method for Dissolved Oxygen Determination The three main objectives of the experiment are to (1) determine dissolved oxygen (DO) in water using the classical method (redox titration), (2) discuss the chemistry behind the Winkler method for DO analysis and (3) describe the sampling technique for the analysis of DO in water sample. In the Winkler method, or Iodometry, the dissolved oxygen is made to react with Iodide ion to yield Iodine which will be titrated...

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Oxygen Delivery Devices

 Oxygen Delivery Devices Fact: Oxygen is a medication ordered by the physician Humans naturally breath 21% oxygen from the room air Normal oxygen saturation is 95-99% Clinically, if not receiving oxygen therapy, a patient on room air should have pulse ox reading of at least 92% or above Definitions: Pulse oximeter – a non-invasive way to monitor the percentage of oxygen carried in blood. Hypoxia – Impaired level of oxygen in the body Hypoxic - Lack of oxygen in the tissues, tissue starved...

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Explanations of the major elements: oxygen, carbon, hydrogen, nitrogen, calcium, phosphorus, magnesium, potassium, sulfur, sodium, chlorine, iron and zinc.

Oxygen (O) Human beings obtain this element from the air. It enters a person's bloodstream through the lungs. The blood carries oxygen to the cells of the body. In the cells, oxygen combines with chemicals obtained from food. Energy produced during this process makes it possible for each cell to perform its function in the body. Also, oxygen atoms are present in water and water is essential to all life. It is present in many organic compounds. While oxygen is necessary for life, oxygen as ozone...

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Effect of decreasing the concentration of 95% solution of ethanol on the volume of oxygen gas collected through the reaction of hydrogen peroxide and catalase

chicken liver, ethanol solution (diluted ethanol solution for other trials) and hydrogen peroxide in a test tube with a side arm, and having a rubber tube lead the oxygen gas into a gas collection tube. Results from the tests showed a negative correlation, this means that the more diluted the solution of 95% ethanol was, the less oxygen gas collected. Controlling a number of factors which include human error, temperature change, pH levels, substrate concentrations and ensuring a controlled experimental...

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Heated and Humidified High Flow Oxygen Therapy

Heated and Humidified High-Flow Oxygen Therapy Reduces Discomfort During Hypoxemic Respiratory Failure This research article was written after a randomized study was done to evaluate the effects that heated and humidified high flow oxygen therapy has on patients that suffer from hypoxemic respiratory failure. In general when a patient is admitted to the hospital and placed on a high flow oxygen device there is no heat or humidity added to the supplemental oxygen the patient is getting. As anyone...

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Antioxidant Effects on Reactive Oxygen Species

Antioxidant Effects on Reactive Oxygen Species Abstract Antioxidants are among key molecules for a healthy living. Antioxidants are molecules that prevent damage of cells through inhibition of oxidizing agents such as free radicals. This experiment was aimed at investigating the role of antioxidant on the inhibition of reactive oxygen species. To demonstrate this, quercetin was used as antioxidant and its effect on reactive oxygen species examined. RAW 264.7 cells...

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Biochemistry 208

red, and brown 4 heme groups – red, white, and blue twizzler 4 iron atoms – chocolate Rollo candies 4 oxygen molecules bound to the iron – red twizzler in a circle (Hudson-Miller, Hemoglobin, 2013). MAJOR DIFFERENCES BETWEEN OXYGENATED AND DEOXYGENATED STATES OF HEMOGLOBIN Oxygenated State of Hemoglobin Deoxyenated State of hemoglobin One hemoglobin can carry 4 oxygen Not bound to oxygen Plantar shaped Concave shaped Relaxed state Tense state Red, bright color Not red, bright color ...

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Joseph's Story

has stopped, what cellular processes and membrane functions are going to be affected by the loss of oxygen, blood glucose, and waste removal? A: Oxygen and blood glucose are essential ions that are necessary for the pumping of the heart. Their delivery to the heart will slow down. Carbon dioxide levels will increase -- this causes the Ph levels to drop. Mitochondria will no longer have oxygen and glocose, which is needed to make ATP. This causes cells to die. ff Assuming Joesph's heart has...

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Why and How Do We Breathe?

the alveoli. Smoking brings in particles to the alveoli. These particles get in the way of gas exchange and reduce the amount of oxygen that the cells get. There are actually four stages of gas exchange: l. Breathing - air in and out of lungs 2. External respiration – gas exchange between blood and air from environment in the alveoli 3. Transport of oxygen to cells and carbon dioxide away from the cells 4. Internal respiration – gas exchange between blood and internal cells The point...

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Composition of Alveolar Gas

Explain why alveolar gas has a different composition from air. Atmospheric (external) air contains a high percentage of oxygen and nitrogen whereas alveoli gas contains a lower percentage of oxygen and a higher percentage of carbon dioxide. The differences in composition are due to the fact that gaseous exchange is taking place within the alveoli in the lungs. Oxygen is diffusing from the alveoli into the pulmonary artery and carbon dioxide is diffusing back into the alveoli from the pulmonary...

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Experiment 1 Lab Report

Experiment 1 Cyanobacteria Oxygen Production Through Photosynthesis Date Performed: September 2, 2014 I. Introduction a. Background Cyanobacteria or blue green algae are renowned for their tolerability and susceptibility even in wide range of environmental conditions, a characteristic of many primitive organisms. CNB are believed to be the agents of autotrophic origin of life thus they probably represent the survivors of the earliest photosynthetic plants, along with photosynthetic and chemosynthetic...

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The adaptation of red blood cells and haemoglobin to ensure efficient respiration

transport of oxygen to the cells of tissues and organs by blood vessels is vital for respiration to occur. Oxygen is carried in red blood cells by the pigment haemoglobin, a globular protein consisting of four polypeptide chains. Both of these components of blood are structured specifically to carry out their functions of oxygen transport, hence ensuring efficient respiration. Erythrocytes, or red blood cells, possess a unique structure that enables them to play their role in oxygen transport. They...

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Introduction to Science Exercise 1: The Scientific Method Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many living organisms require oxygen to survive, it is a necessary component of water systems such as streams, lakes, and rivers in order to support aquatic life. The dissolved oxygen is measured in units of parts per million (ppm). Examine the data in Table 4 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample...

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Investigation Of The Rate Of Photosynthesis Of Pondweed

concentration of sodium bicarbonate relate to the amount of oxygen produced by Elodea (Canadian pond weed) in the process of photosynthesis? Hypothesis: If there is an increase in concentration of sodium bicarbonate the amount of oxygen produced will increase because the sodium bicarbonate concentration will increase the carbon dioxide levels. Independent variable- Concentrations of sodium bicarbonate (8%,6%,4%,2% 0%) Dependent variable- Amount of oxygen collected in the measuring cylinder. Controlled variables-...

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Anaerobic Bacteria

use of oxygen. Oxygen is a very important part of the organisms’ survival. Oxygen has a tendency to form very reactive by-products inside a cell. These by-products create havoc by reacting with protein and DNA, thus inactivating them. Cells that are able to live in the presence of oxygen have evolved enzymes to cope with H2O2 and O2- and thus are not inhibited by O2. Also many anaerobes have oxygen labile Fe-S centers and no cellular machinery to protect them from the oxidizing power of oxygen. Organisms...

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Role of Respiratory Pigments in Gaseous Exchange

reversibly with oxygen, found in the body fluids or tissues of multi-cellular invertebrate animals and microorganisms. The role of these pigments is primarily to aid in the transport of molecular oxygen. Thus they are distinguished from respiratory enzymes, which are concerned with the metabolic consumption of oxygen. Four distinctly colored groups of respiratory pigments exist among invertebrates: hemoglobins (purple, become orange-red with oxygen), chlorocruorins (green, become red with oxygen), hemocyanins...

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Water and Line Graph

Exercise 1: Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since virtually every living organism requires oxygen to survive, it is a necessary component of water systems such as streams, lakes and rivers in order to support aquatic life. The dissolved oxygen is measure in units of ppm—or parts per million. Examine the data in Table 2 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from; finally, answer...

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Sci207 W1 Lab

Introduction to Science Exercise 1: The Scientific Method Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many living organism requires oxygen to survive, it is a necessary component of water systems such as streams, lakes and rivers in order to support aquatic life. The dissolved oxygen is measured in units of parts per million (ppm). Examine the data in Table 4 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample...

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Physiology Respiratory

familiar with Dalton’s Law and Henry’s Law. - Be familiar with the concept that gases diffuse down their partial pressure gradients, so as oxygen diffuses from alveoli to blood, it is moving from a partial pressure of 104mm Hg (alveoli) to 40 mm Hg (blood); carbon dioxide diffuses from blood (45mm Hg) to alveoli (40 mm Hg). Also, be familiar with the movement of Oxygen into tissues and carbon dioxide out of tissues (see 23.16 - Be familiar with the 3 factors that determine alveolar Po2 and Pco2 (factors...

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Light and Photosynthesis

Questions.] • To survive, what gas do we need to breathe in? Oxygen • Where is this gas produced? In plants Gizmo Warm-up During photosynthesis, plants use the energy of light to produce glucose (C6H12O6) from carbon dioxide (CO2), and water (H2O). Glucose is a simple sugar that plants use for energy and as a building block for larger molecules. A by-product of photosynthesis is oxygen. Plants use some of the oxygen they produce, but most of it is released. In the Photosynthesis...

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What to Write About in 1000 Word Persuasive Speech

What is collagen? Collagen is a simple protein made up of amino-acids. Amino acids are built from carbon, oxygen and hydrogen. In fact collagen makes up approximately 30% of the protein within the body. As a structure Collagen is intensely strong and is a vital protein that is found all over the body: In tendons and ligaments. It plays an important role in the protection function of the skin in that it helps limit the absorption and spreading of pathogenic substances, environmental toxins, micro...

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Effect of Temperature on Enzyme Catalase Activity in a Potato

Catalase Activity in potato Aim: To investigate the Effect of temperature (10, 37, 60) Celsius (C ͦ) on enzyme catalase activity in potato using 2% of hydrogen peroxide (H202) as the substrate measuring the height (cm) of oxygen gas (bubbles) and calculating the volume of oxygen bubbles produced (cm3) Introduction: Enzymes are biological catalysts that speed up metabolic reactions without being affected. They lower the activation energy needed to start a reaction.Enzymes are affected by several...

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Explain the Physiology of Two Named Body Systems in Relation to Energy Metabolism in the Body

Physiology Of Two Named Body Systems In Relation To Energy Metabolism In The Body I am going to explain the physiology of the respiratory and cardiovascular system in relation to the energy metabolism in the body. Energy metabolism is where the nutrients oxygen and glucose are took in and delivered the organs. Energy is needed in order for our body to be able to function. Energy helps break down molecules and to build new molecules. The cardiovascular system consists of the heart, blood and blood vessels...

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Biology Study Guide

the process that releases energy from food in the presence of oxygen. Cellular respiration captures the energy from food in three main stages: • glycolysis • the Krebs cycle • the electron transport chain Glycolysis does not require oxygen. The Krebs cycle and electron transport chain both require oxygen. • Aerobic pathways are processes that require oxygen. • Anaerobic pathways are processes that occur without oxygen. Comparing Photosynthesis and Cellular Respiration The energy...

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muscle fatigue

equation for ATP(energy) is ATP-> energy+ adenosine diphosphate(ADP+P). there are two pathways anerboic and aerobic respiration. aerobic requires oxygen in order for respiration to take place. The equation for this is glucose + oxygen -> carbon dioxide + water(+energy). Anerboic respiration does not require oxygen it only happens when there is not enough oxygen for aerobic respiration. The equation for this is glucose -> lactic acid (+energy relesed). When a muscle contracts it creates movement which...

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Causes and Effects of Smoking

vapor, and can no longer help form ozone. * Ozone absorbs UV-C or UV-B and most of it will break back down to oxygen. * Ozone has a natural half-life, and decays spontaneously with time and temperature back to oxygen. * Ozone encounters water vapor, and forms hydrogen peroxide. * Ozone encounters a photocatalyst (like CFC, HCFC, Halon), and is converted back to oxygen. CFCs, HCFCs, and Halon: The ozone layer is destroyed by CFC's, chlorofluorocarbons, that are used as a propellant...

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Respiratory Answer

‘heme’. The ‘heme’ group contains one atom of iron (Fe²+) and it is this iron that the oxygen molecule combines itself to. As there are four of the iron molecules in the haemoglobin this shows that a maximum of four oxygen molecules can be carried by the haemoglobin at anytime. For simplicity the equation of the reaction of haemoglobin and oxygen is written as a single polypeptide ‘heme’ chain reacting with oxygen: O2 + Hb ↔ HbO2 . The reactions of the four subunits occur in a consecutive manner, with...

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