Essays Tagged: "Oxygen"

Detection of biological molecules. Lab work.

rvations.DETECTION OF BIOLOGICAL MOLECULESIntroduction: Without carbon, nitrogen, hydrogen, sulfur, oxygen and phosphorus, lifewouldn't exist. These are the most abundant elements in living organisms. ... tion and adding heat, an oxidation-reduction reaction will occur. The sugarwill oxidize, gaining an oxygen, and the Benedict's reagent will reduce, loosing an oxygen.If the resulting solution is red o ...

(6 pages) 122 0 4.6 Oct/1996

Subjects: Science Essays > Biology

Why proteins are imortant

ur skin. Hemoglobin, a protein in the bloodstream, has an important role in respiration by carrying oxygen through red blood cells. There is also a special group of proteins called enzymes that do man ...

(1 pages) 115 0 4.1 Mar/1997

Subjects: Science Essays > Biology > Human Biology

Abortion

is just sick. I think that it is in humane to kill a live child. Just think, it is alive. It needs oxygen to breath. It needs food to live. And if you don't take care of the baby, it wouldn't come ou ...

(3 pages) 177 1 3.0 Nov/1996

Subjects: Social Science Essays > Controversial Issues

Chromium

romium.Most chromium comes from something called chromite which isa mixture of chromium , iron, and oxygen. Chromite is a common ratherordinary black mineral that no one really noticed until more rece ... s palette containchromium. Chrome yellow is made from a substance which containschromium, lead, and oxygen. Zinc yellow contains zinc, chromium andoxygen. Chrome red is another chromium compound. Chro ...

(2 pages) 39 0 4.6 Jan/1996

Subjects: Science Essays > Physics

Angina Pectororis

s away. This occurs when myocardium cells, the muscle portion of your heart, are temporarily denied oxygen. At this stage they do not die, but maybe weakened. If left untreated and the disease continu ... ally clogging the vessel. As a result of this all cells feed by the vessel die because of a lack of oxygen. If this condition is found early, it can be corrected with surgical procedures or, in some m ...

(2 pages) 58 0 3.0 Mar/1997

Subjects: Humanities Essays > Health & Medicine > Diseases

How changes in the atmosphere, eukarotes, and multicellularity have occured and influenced life on earth

About 2.5 billion years ago, oxygen began slowly to accumulate in the atmosphere, as a result of the photosynthetic activity of t ... result of the photosynthetic activity of the cyanobacteria. Those prokaryotes that were able to use oxygen in ATP production gained a strong advantage, and so they began to prosper and increase. Some ... r cells may have become symbionts with larger cells and evolved into mitochondria. As the amount of oxygen and other atmospheric gasses increased, they started blocking out deadly u.v. rays from the s ...

(2 pages) 79 1 3.2 Mar/1996

Subjects: Science Essays > Atmospheric Sciences

life's powerful forces

ever reach its full potential. If rain begins, the fire is slowed and may even be stopped for good. Oxygen is necessary for a fire to flourish; without it a fire will whittle and die. Some objects all ... because of their environment. It is general scientific knowledge that humans survive because of the oxygen in the air. Without good oxygen content, humankind could not survive. If a certain part of th ...

(3 pages) 45 0 4.3 Nov/1996

Subjects: Humanities Essays > Philosophy

The Heart, It's Diseases, and Functions

re slowly.When you run the heart rate increases to provide muscles and other tissueswith additional oxygen they need. The typical heart rate is 72 beats perminute. Each beat gives out 2-3 ounces of bl ... ns in the body.The Superior is really the biggest. These veins have a lot ofcarbon dioxide and have oxygen-poor blood. The aorta is the biggestartery in the whole body. Which will be covered in the re ...

(6 pages) 176 0 3.7 Feb/1997

Subjects: Humanities Essays > Health & Medicine

Autobiographical incident--Tramatic incident of falling in my backyard pool. This is an incident that I had to write about for English.

think is how my scream is muffled, and no one can hear me. I try to take a breath , but there is no oxygen to feed my lungs. I'm falling deeper and deeper. So deep I think I'm going to go on forever. ...

(4 pages) 93 1 4.8 May/2002

Subjects: Literature Research Papers > Creative Writing

Photosyntesis

gy. They make their food and energy through a process called photosynthesis. Through photosynthesis oxygen is also produced. Photosynthesis is 'a process in which green plants synthesize carbohydrates ... mals that eat animals that eat plants, etc. (Levine 726) All humans rely on these plants to produce oxygen from photosynthesis. The presence of light and of the green pigment chlorophyll makes the cha ...

(3 pages) 107 1 2.8 May/1996

Subjects: Science Essays > Biology > Plant Biology

All about Pneumonia

ation of your lungs. The air sacs in the lungs fill with mucus and other liquids. When this happens oxygen has trouble reaching your blood. When there is too little oxygen in your blood, your body cel ... liquid that will get into the blood stream and affect the whole body. The liquid makes it hard for oxygen to get into the blood stream.Viral:Half of all Pneumonia is believed to be caused by viruses. ...

(3 pages) 98 0 3.0 Jun/2002

Subjects: Humanities Essays > Health & Medicine

The Chemical Element Florine

its compounds using large amounts of electrical energy. Fluorine is so reactive that it can extract oxygen from water and it also releases oxygen as a gas. Compounds of fluorine are called fluorides a ...

(3 pages) 47 0 4.0 Aug/2002

Subjects: Science Essays

What are Catalytic Converters?

right through the car engine.Carbon Dioxide (CO2): A harmless, odorless gas composed of carbon and oxygen. It is also a greenhouse gas that contributes to global warming.Water vapor (H2O): Another by ... arming.Water vapor (H2O): Another by-product of combustion. The hydrogen in the fuel bonds with the oxygen in the air.These three emissions are mostly harmless, although carbon dioxide emissions are b ...

(7 pages) 54 0 4.3 Sep/2002

Subjects: Humanities Essays > Health & Medicine > Sports

The cause and effects of acid mine drainage

h is exposed to air and water. The major components of ARD formation are reactive sulfide minerals, oxygen, and water. Biological activity and reactions is what is responsible for the production of AR ... low and sometimes white color. The metals stay in the solution beneath the earth due to the lack of oxygen. When the water comes out of the mine or the borehole it reacts with the oxygen in the air or ...

(7 pages) 72 0 3.5 May/1996

Subjects: Science Essays > Environmental Science

The effects of altitude on human physiology.

e. One such imbalance is the effect ofincreasing altitude on the body's ability to provide adequate oxygen to beutilized in cellular respiration. With an increase in elevation, a typicaloccurrence whe ... to the changes in externalenvironment. Foremost of these changes is the diminished ability to obtainoxygen from the atmosphere. If the adaptive responses to this stressor areinadequate the performance ...

(14 pages) 69 0 2.0 Apr/1997

Subjects: Science Essays > Biology > Human Biology

Circulatory System

t and left auricles, or atria, and the right and left ventricles. The right side of the heart pumps oxygen-poor blood from the cells of the body back to the lungs for new oxygen; the left side of the ... lls of the body back to the lungs for new oxygen; the left side of the heart receives blood rich in oxygen from the lungs and pumps it through the arteries to the various parts of the body. Circulatio ...

(6 pages) 164 0 4.3 Jan/1997

Subjects: Science Essays > Biology > Human Biology

Catalytic Converter

e concept behind this is to add a catalyst and force a reaction between the automobile'sexhaust and oxygen in the converter. To see just how this happens let's look inside of acatalytic converter.A ca ... the described catalyst. This forces a reaction between thecarbon monoxide and hydrocarbons with the oxygen inside the converter creatingproducts of carbon dioxide and water vapor. The reaction which o ...

(2 pages) 42 0 3.0 Nov/1996

Subjects: Science Essays > Chemistry

Sickle Cell Anemia

f red blood cells (erythrocytes) or in their hemoglobin content. These cells are the means by which oxygen is carried to the various parts of the body. People who are anemic get symptoms caused by not ... the various parts of the body. People who are anemic get symptoms caused by not enough delivery of oxygen to their body tissues. There are three primary causes of anemia:(1) Reduced production of red ...

(2 pages) 71 0 4.6 Jan/1996

Subjects: Science Essays > Biology

The effects of altitude on human physiology

e. One such imbalance is the effect ofincreasing altitude on the body's ability to provide adequate oxygen to beutilized in cellular respiration. With an increase in elevation, a typicaloccurrence whe ... to the changes in externalenvironment. Foremost of these changes is the diminished ability to obtainoxygen from the atmosphere. If the adaptive responses to this stressor areinadequate the performance ...

(14 pages) 116 0 4.7 Apr/1997

Subjects: Science Essays > Biology > Human Biology

THE EFFECTS OF ALTITUDE ON HUMAN PHYSIOLOGY

e. One such imbalance is the effect ofincreasing altitude on the body's ability to provide adequate oxygen to beutilized in cellular respiration. With an increase in elevation, a typicaloccurrence whe ... to the changes in externalenvironment. Foremost of these changes is the diminished ability to obtainoxygen from the atmosphere. If the adaptive responses to this stressor areinadequate the performance ...

(14 pages) 101 0 3.7 Apr/1997

Subjects: Science Essays > Biology > Human Biology