SOCI 2000 Chapter Notes - Chapter 15: Trichomoniasis, Itch, Cell Nucleus
Chapter 15
Key Terms
Parasites
oOrganisms that have evolved to live in or on a host in manner that harms the
host
Macroparasites
oLarge multicellular parasites including some insects and anthropods
Microparasites
oMicroscopic generally singled celled parasites including protozoans, bacteria, and
fungi
Protozoa/protozoans
oA type of single celled microorganism with a cell nucleus
Bacteria
oSingle celled microorganisms with a simpler internal cellular structure than
protozoa
oSome species require a host while some are free living
oSome are harmful parasites while some are beneficial
Fungi
oA type of plant that may be single celled or like mushrooms, multicellular
Pubic lice
oA type of parasitic insect usually passed through sexual contact
Scabies
oA type of parasitic mite that can be passed through any type of physical contact
including sex
Trichomoniasis
oCaused by a protozoan the most common STI
oSymptoms include frothy yellowish green discharge itching and painful urination
but infected individuals are most often symptom free
Chlamydia
oA common STI that is often asymptomatic and is curable but can cause
permanent damage if left untreated; caused by a bacterium that can be spread
by fingers or sexual contact
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Document Summary
Parasites: organisms that have evolved to live in or on a host in manner that harms the host. Macroparasites: large multicellular parasites including some insects and anthropods. Microparasites: microscopic generally singled celled parasites including protozoans, bacteria, and fungi. Protozoa/protozoans: a type of single celled microorganism with a cell nucleus. Bacteria: single celled microorganisms with a simpler internal cellular structure than protozoa, some species require a host while some are free living, some are harmful parasites while some are beneficial. Fungi: a type of plant that may be single celled or like mushrooms, multicellular. Pubic lice: a type of parasitic insect usually passed through sexual contact. Scabies: a type of parasitic mite that can be passed through any type of physical contact including sex. Trichomoniasis: caused by a protozoan the most common sti, symptoms include frothy yellowish green discharge itching and painful urination but infected individuals are most often symptom free.
