Oxygen Essays

Oxygen & University

Represented by the symbol O, the element known as Oxygen exists in standard temperature and pressure conditions as a colorless, odorless and tasteless gas known as dioxygen, which is essentially made up of two oxygen atoms bound together. It possesses an electron configuration of 1s2 2s2 2p4 and is the third most abundant element by mass after hydrogen and helium, and constitutes 21% of the Earth’s atmosphere. (Elmsley, 2001; Cook & Lauer, 1968) Oxygen has three naturally occurring isotopes: 16O,…

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Cari’s Story

A) How could an infection in Cari’s nasal passages and pharynx spread into her sinuses? Mucous membranes of the nose, paranasal sinuses, pharynx and middle ear are connected by ducts in the throat. B) What is a cough reflex? Describe the process that Cari’s respiratory system is using to clear her lungs by coughing? A cough reflex has both sensory (afferent) and motor (efferent) components. Pulmonary irritant receptors (cough receptors) in the epithelium of the respiratory tract are sensitive to…

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The Oxygen Carbon Cycle

The carbon-oxygen cycles are actually two independent cycles. However, both these cycles are interconnected as well as interdependent on each other to some extent. There are four processes involved in the completion of the carbon-oxygen cycle. Oxygen-carbon cycle processes are: * Photosynthesis Plants undergo photosynthesis that helps them produce energy and food for themselves. During photosynthesis, plants take in carbon dioxide (CO2) and absorb water (H2O) with the help of their roots. The chlorophyll present in the leaves and the…

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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) can result in the development of hypoxic zones. The main driving factor of the oxygen cycle…

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Photosynthesis Lab Report

An experiment to investigate the effects of carbonate concentration in water on the rate of photosynthesis. Aim: The aim is to investigate how increasing carbonate in water can affect the rate of photosynthesis. Introduction: The rate of photosynthesis can be increased or decreased in many different ways. For example, by adding substances like alkaline or salt to the water, you can increase or decrease the acidity or basics, if the water has too much acidity, it can often delay the…

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Oxygen and Trees

Trees occupy an important place in the life of man. The trees provide us flowers, fruits, fodder for animals, wood for fire and furniture and provide cool shadow from scorching sun. They give us so many such good things and yet expect nothing in return. Trees give us fruits for food and flowers for pleasure. They provide us timber (wood) for building our houses and making furniture. They provide us wood for fuel. They supply sleepers for the railway line….

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The Displacement Reactions

Purpose: to see how displacement reaction works with different chemicals and what chemical has more reactivity series then other Hypothesis: Iron + Copper Sulfate: Iron will displace copper because it is more reactive and it is going to end up as Iron Sulphide + Copper Copper + Silver Nitrate: Copper will displace Silver because it is more reactive and it is going to end up as Copper Nitride + Magnesium + Copper oxide: Magnesium will displace Copper because it is…

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Cyanobacteria_ Oxygen and Aerobic Respiration

Cyanobacteria’s big advantage over other early life forms was their ability to perform photosynthesis. They contain a blue photo reactive pigment that can absorb the energy from the sunlight and 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…

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Importance of Trees

Trees are the largest and longest living organisms on earth. To grow tall the tree has become a miracle of engineering and a complex chemical factory. It is able to take water and salts out of the earth and lift them up to the leaves, sometimes over 400 ft above. By means of photosynthesis the leaves combine the water and salts with carbon dioxide from the air to produce the nutrients which feed the tree. In this process, as well…

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Coal Mining

Coal mining has been around for decades since the 1800s and coal has been powering our lights even till today. The documentary called, “Burning the future: Coal in America” presented a lot of vital information about how the coal industries work and how coal helps the nation stay lit. Countries that build the world’s biggest coal plants are the United States, China and India. The states that practice coal mining are Kentucky, Tennessee, and Virginia. Coal power plants emissions contain…

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Stream Ecology Intro

In this lab we measured and examined several different factors from Prickett’s Creek. In the following introduction I will explain what stream ecology is and how are experiments will justify or appeal my hypothesis. Stream ecology is the overall health of the water and the surrounding ecosystem. There are many different components that make up a stream’s health. The main factors that affect stream ecology are: geology, climate, vegetation, nutrients, bacteria, temperature, DO (Dissolved oxygen), and toxic chemicals. The shape…

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Physiology of Two Named Body Systems

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. The cardiovascular system is the major transport of materials to and from the cells. Blood is carried from the heart around the body via the arteries and the blood is…

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Homeostasis Lab

Background Exercise causes many factors of homeostasis to kick in to maintain internal equilibrium. How exercise affects some of these factors can be determined by measuring and observing certain conditions of the human body. Some of these conditions are: • change in skin color on arms and face • perspiration level • external body temperature • breathing rate • heart rate Prelab Notes 1. Working in groups of 3 or 4, select a student that will be able to jump…

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Neonate Case Write Up

Baby boy A., preterm, 36 weeks by Ballards score was delivered by Ceasarian section at a private hospital to a 32 year old multigravid with Apgar score 8 and 9 at one and five minutes, respectively. Birth weight was 2.3kg. Birth length 45 cm. Mother, on the 3rd trimester, had urinary tract infection treated with Amoxycillin 500mg/cap, 1 capsule TID for 1 week. Thereafter she was admitted in a private hospital due to preterm labor where tocolysis was done. Two…

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Causes and Effect of Pollution in our Environment

INTRODUCTION This chapter presents the overview of the topic about the causes and effects of air pollution to our environment. The term air pollution is a mixture of natural and manmade substances in the air we breath such as fine particles produced by the burning of fossils fuel ground level ozone, which is a reactive form of oxygen that is a primary component of urban smog and noxious gases such as sulfur dioxide, nitrogen oxides, carbon monoxide, and chemical vapors….

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