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Viruses and Bacterial Pathogenicity Key Terms
Fichas del conjunto (22)
- 1A virus is the smallest living organism true or falseFalse- it is not a living organism
- 2An organism harming the host with benefits to itselfparasitism
- 3virus or microorganism able to produce diseasePathogen
- 4means literally living togethersymbiosis
- 5depends on each other to survive, can not survive without each otherMutualism
- 6involves one way benefitcommensalism
- 7is the ABILITY to cause disease to hostPathogenicity
- 8the degree of pathogenicityvirulence
- 9bacteria that causes disease in a compramised hostopportunistic infection
- 10ability to lie dormantlatent infection
- 11needs host to replicate- always cause disease. Do not associate with host except in diseaseobligatory pathogen
- 12name of a newly formed virus particlevirions
- 13A virus contains either DNA or RNA but not both. True or FalseTrue
- 14What is a retrovirusrequires reverse transcription of RNA to DNA
- 15Name 6 stages or viral replication, in the correct order1. Attachment
2. Penetration
3. Uncoating
4. Replication
5. Assembly
6. Release - 16A nosocomial infection is one obtained in a hospital invironment. True or FalseTrue
- 173 ways a disease is transmitted1. vehicle- contaminated food/water
2. contact- direct & indirect
3. vector- through insects - 18Name 3 portals of entry for pathogens1. skin
2, Mucous membrane (mouth)
3. Parenteral- into veins - 19- Gram positive - toxin released while living - toxin is proteinExotoxins
- 20liposacharide found on gram negative cell released from dead bacteriaEndotoxins
- 21How gram's stain distinguishes bacteriaA gram positive organism stains purple due to thicker peptidoglycan layer.
A gram negative organism stains pink/red due to a thin layer of peptidoglycan layer in the cell wall - 22Describe binary fission1. A form of cellular reproduction
2. Replicate DNA ( copies nucleoid)
3. Nucleoid attaches to cell membrane
4. Nucleoid seperates
5. Cell membrane/ wall forms down centre of cell
6. cell splits into two new cells
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- Fichas sobre Sin título, creado por Emily Rose Tobin el 02/11/2015.
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