HTHSCI 2HH3 Study Guide - Comprehensive Final Exam Guide - Antibiotics, Pathogen, Bacteria

• School: McMaster University
• Department: Health Sciences
• Course: HTHSCI 2HH3
• Professor: Kirsten Culver

Document Summary

Bacteria: prokaryotic; no nuclei, single celled organisms, live singly, in pairs, chains, clusters, most common infection. Antibiotics: work against bacteria because they know the different between bacteria and hosts, antibiotics are more difficult when it comes to fungi and other microbes because they get confused between host and the microorganism. Viruses: acellular; not visible by light microscopy, obligatory microbes composed of genetic material surrounded by a protein coat, do(cid:374)"t (cid:373)ake us as si(cid:272)k as (cid:271)a(cid:272)te(cid:396)ia (cid:271)e(cid:272)ause (cid:448)i(cid:396)uses a(cid:396)e a(cid:272)ellula(cid:396) a(cid:374)d self- limiting. Fungi: eukaryotic; possess a nuclei and cell wall, organelles, obtain nutrients from other organisms; yeasts (unicellular) & molds (multicellular) Protozoa: eukaryotic; single-celled organisms, possess a nuclei (referred to as parasites) Helminths: eukaryotic; multicellular, possess a nuclei, visible with the naked eye (referred to as parasites) Single-celled organisms: no nucleus = prokaryotic, possess s(cid:373)alle(cid:396) sepa(cid:396)ate (cid:272)i(cid:396)(cid:272)les of dna (cid:862)plas(cid:373)ids(cid:863, ribosomes smaller than those of eukaryotes, cell wall (composition can vary) and cell membrane, external cellular structures (flagella, pili)