Essays Tagged: "pathogens"

Studying Soil Bacteria. Microbiology Lab.

fication. The examination of soil is due to the fact that there are too high of a risk of culturing pathogens when the samples are taken from the classroom. The data recorded for this lab consist of i ... ity of the fungus affecting the observations of the bacteria cultures.The use of slightly hazardous pathogens would have made the lab more interesting. I found that Requirement #3 was impossible due t ...

(6 pages) 139 1 2.9 Jan/1996

Subjects: Science Essays > Microbiology

PCR And Its Use

ntists to clone DNA.'A 'rapid diagnostic' technique used in the clinical microbiology lab to detect pathogens. It relies upon amplification technology utilizingthe heat stable DNA polymerase from a th ...

(3 pages) 84 0 3.0 Jan/1997

Subjects: Science Essays > Biology

The Immune System

autoimmunity.The immune system is composed of many parts that work together to fightinfections when pathogens or poisons invade the human body. Pathogens are disease-causing organisms such as bacteria ...

(3 pages) 157 1 3.4 Oct/1996

Subjects: Humanities Essays > Health & Medicine

Water Pollution, Is it as big of a problem as we think? Speaks of the factors that cause pollution, the effect that pollution has on our world today, and what it has in store for the future if things

n are contributing factors in this problem. Here are some things that are associated with pollution:Pathogens: Pathogens are disease causing bacteria, viruses, and protozoa. They usually come from hum ...

(10 pages) 667 0 3.8 Sep/1996

Subjects: Science Essays > Environmental Science

Defenses of human immune system and how they are influenced by hereditary genetics.

greatly affected by genetics and hereditary traits. The immune system is the body's defense against pathogens, such as bacteria and viruses. The immune system is a two-part defense mechanism, with spe ... s. These reactions deliver a knockout punch to any invading pathogen, but is only effective against pathogens the body has already recognized and been exposed to before. Against new enemies, this syst ...

(3 pages) 67 0 4.0 Apr/2003

Subjects: Science Essays > Biology > Human Biology

Biology...defenses of the body against bacteria, diseases...etc.

NotesThe skin provides the first defense against invasion by pathogens. Skin acts as a wall that keeps pathogens out of the body. Secretions of the oil and sweat ... d sweat glands within the dermis make the skin's surface very acidic, inhibiting the growth of many pathogens. Sweat also contains the enzyme lysozyme, which attacks and digests the cell walls of many ... hich attacks and digests the cell walls of many bacteria.Internal surfaces of the body though which pathogens could pass are covered by mucous membranes, epithelial layers that produce the sticky flui ...

(3 pages) 103 1 4.3 Aug/2003

Subjects: Science Essays > Biology > Human Biology

This is a research seminar summary about Fungal Pathogenesis and explains some physiological pathogenic characteristics in fungi.

gi around us and their ability to cause disease is accidental causing as oppose to a virus or other pathogens.Fungi abilities include physiological barriers that grow in humans, their ability to deriv ...

(2 pages) 28 0 5.0 Sep/2003

Subjects: Science Essays > Biology

This is all about the immune system, how it works, and what it does.

ver can help to fight the pathogen. Second, the respiratory system contains cilia and mucus to trap pathogens. In the digestive system, enzymes in the stomach, pancreas, and liver destroy pathogens.T- ... and acts against particular foreign invaders.A vaccination is a means of producing immunity against pathogens such as viruses and bacteria by the introduction of live, killed, or altered antigens that ...

(2 pages) 85 1 4.3 Nov/2003

Subjects: Science Essays > Biology > Human Biology

Speech on different pathogens and the diseases they cause.

difference between prions, viruses, bacteria, protozoans, fungi and macro-parasites. These are all pathogens that cause diseases. I will also be giving examples of the diseases that these pathogens c ...

(2 pages) 114 1 4.4 Dec/2003

Subjects: Science Essays > Biology

Animal Health Assignment (Includes pathogens- ie. viruses, bacteria, protozoa etc. and vaccination)

l conditions you expect to see during an animal's life. Disease is caused by micro organisms called pathogens; these include viruses, bacteria and protozoa.VIRUSESSize: between 30 and 300 nmViruses ar ... d which are foreign. Without its immune system the animal's body would not be able to fight harmful pathogens which enter the body and the animal would die. In a healthy animal there are 2 types of im ...

(10 pages) 46 0 4.5 Feb/2004

Subjects: Science Essays > Zoology

Structure And Function Of The Spleen

ning erythrocytes, platelets and antigens. Lymphocytes produced in the spleen fight disease causing pathogens.2. Filters aged erythrocytes, platelets and blood-borne antigens.The spleen is the largest ... antibodies. Activated helper-T cells also aid cytotoxic-T cells to directly destroy the infectious pathogens (T-cell mediated immunity). Activated helper-T cells can aid a combination of cytotoxic-T ...

(4 pages) 56 0 4.5 Mar/2004

Subjects: Science Essays > Biology

The Genetic Modification of Crops and The Environment

rosion, and better yield, and the risks are the possible of creating new or more vigorous pests and pathogens, harm to "non target" beneficial (1). foodWhat Is Plant Biotechnology? Plant biotechnology ... sites. When the toxin binds, the gut wall changes from a protective layer to an open sieve so that pathogens usually kept within the gut and excreted are released into the insect's body. As a result, ...

(8 pages) 284 3 4.4 Apr/2004

Subjects: Science Essays > Genetics & Genome Projects


quency of viral respiratory nosocomial infections? First we must know the modes of transmission the pathogens use.RSV is the most important cause of respiratory infection in young children worldwide, ...

(3 pages) 61 0 5.0 Apr/2004

Subjects: Humanities Essays > Health & Medicine

The Study of Germs

MSFor as long as humans have been on this planet, the microscopic life forms that we call germs, or pathogens, have been here too. For all this time they have been multiplying in the soil, in the wate ... des in fighting germs, but Earth's tiniest creatures remain our biggest foes.Germs are often called pathogens, which means "the causes of disease," in Greek. The four main types of pathogens are bacte ...

(15 pages) 119 1 4.8 May/2004

Subjects: Science Essays

SERRATIA MARCESCENS by Carter Stanley is a background research paper for a science fair project based on the virus Serratis Marcescens and its antibiotics Tetracycline and Streptomycin.

marcescens is actually a hostile pathogen. A pathogen is an agent that causes disease or infection. Pathogens can usually be identified by their ability to metabolize lactose. Fermenters of lactose ar ...

(4 pages) 48 0 5.0 May/2004

Subjects: Science Essays > Biology

Disease Notes

used by a malfunction of the bodyContagious-easily spreadNon-contagious eg. Oppurtunistic infectionsPathogens-disease causing organismsMicro-organisms-too small to be seenMacrorganisms-can be seen wit ... isms-can be seen with eyeEndoparasites-live in body eg wormsEctoparasites-live outside body eg. LicePathogens are parasites that cause diseaseBacteria-infect hosts eg. TBPrions-proteins gone wrong eg. ...

(1 pages) 49 2 2.7 Jun/2004

Subjects: Science Essays > Biology

Nosocomial Infections

ve had short-term procedures have also been found to develop infections due to the same spectrum of pathogens.The concept of infection control was originated by the work of Ignaz Semmelweis. During th ... ts on instruments and surfaces and handwashing with antiseptics has shown to decrease the spread of pathogens in the health care setting.Some clients are at higher risk for developing nosocomial infec ...

(3 pages) 67 0 3.0 Jul/2004

Subjects: Humanities Essays > Health & Medicine

Description of the five types of antibodies generated by the humoral aspect of the adaptive immune response

body secretions such as saliva, sweat, intestinal juice, and milk, and helps prevent attachment of pathogens to epithelial surfaces (including mucous membranes of the epidermis). It plays a major rol ... thelial surfaces (including mucous membranes of the epidermis). It plays a major role in preventing pathogens from gaining entry into the body.IgD - Always bound to the external surface of a B cell, f ...

(3 pages) 29 0 5.0 Mar/2005

Subjects: Humanities Essays > Health & Medicine > Diseases

Fast Food Nation: Policies to curb risks in Food Purchases, Based on reading the book "Fast Food Nation" by Eric Schlosser.

ich can technically contain parts of a large number of cows thereby increasing the probability that pathogens might trigger off an outbreak of food borne illnesses. Finally in a chilling reminder that ... cies to ensure that the finished product that reaches the consumer is free of food outbreak causing pathogens.Policy 1 Operational Policy and policy as regards producers & suppliersA) Ensuring HAC ...

(6 pages) 124 0 5.0 Mar/2006

Subjects: Social Science Essays > Controversial Issues

GE Foods: Are organics really a better solution?

o we truly know the long term effect of these foods? How does the presence or lack there of certain pathogens or vaccines in our foods effect the development of our immune systems? Does whatever doesn ...

(2 pages) 60 4 3.4 Dec/2006

Subjects: Science Essays > Biotechnology