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BIOL 201- Week 1 Class Notes

by: Anela Barber

BIOL 201- Week 1 Class Notes BIOL 201

Marketplace > Pacific Lutheran University > Biology > BIOL 201 > BIOL 201 Week 1 Class Notes
Anela Barber
Pacific Lutheran University

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About this Document

These notes were taken during the first week of Bio 201 with Professor Seidel. I have also included some quick notes from the first reading guide provided. Enjoy!
Introductory Microbiology
Shannon B. Seidel
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This 6 page Bundle was uploaded by Anela Barber on Sunday September 11, 2016. The Bundle belongs to BIOL 201 at Pacific Lutheran University taught by Shannon B. Seidel in Fall 2016. Since its upload, it has received 50 views. For similar materials see Introductory Microbiology in Biology at Pacific Lutheran University.

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Date Created: 09/11/16
Bio 201  Book Nots Chapters 1.1 & 2.1­2.4 Adhesins­ proteins that let microbes/pathogens attach to hosts’ body They bind to receptors *Pathogens need to: 1. Attach to the host 2. 2.Avoid the immune system 3. 3.Take nutrients from the host  Disease­ any disruption in body’s normal flow  Infection Disease­ can be transferred from one host to another Sign vs. symptom­ Sign is a observation from someone about the host. A symptom is only what  the host can FEEL.  Syndrome­ a collection of signs and symptoms to signal a disease *signs and symptoms are usually a response to infection/disease Incubation period­ before signs/symptoms appear but after the pathogen has entered the body Can pass disease to others Prodromal phase­ short and not even that apparent. Just simple headaches and fatigue.  Illness phase­ symptoms and signs appear. FEVER Decline phase­ symptoms and signs start to disappear and the hosts immune system has “won”  Convalescence­ period after disease, body begins to recover.  Morbidity vs. mortality­ morbidity refers to the existence of a disease where mortality refers to  those who have died from the disease.  *Looking at a patient’s medical history can determine what possible diseases can cause certain  symptoms/signs  Aerosol­ secretion of particles into the air for others to ingest as pathogens Direct contact transmission­ when droplet nuclei from one person is transferred to another.  Indirect transmission­ tranmission of a disease through a nonliving thing or (fomites) Fomites­ nonliving things that can transfer pathogens, doorknobs forks This is what is known as the vehicle transmission Vectors­ insects that can carry on pathogen from an animal to another vertical & transovarial.  Endemic, Epidemic, Pandemic  Ways to get into the body: Respiratory Route ­ respiratory system Urogenital route ­ genitals Parenteral route ­ parent Eye Skin *Portal entrance relates to the pathogen’s attachment capability Risk group I­ organisms that pose no threat really Risk group II­ greater pathogenic potential. Rigorous containment procedures required.  Risk group III­ Pathogens that can produce a serious lethal disease. Neg. pressure required to  keep aerosols within the room.  Risk group IV­ only pathogens with no known cure. Can only be studied in biosafe environments


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