Phpr 813 exam questions - Study guides, Class notes & Summaries

Major Groups of Microorganisms - Bacteria (prokaryote) - Fungi (eukaryote) - Viruses - Protozoa (eukaryote) - Algae Major Groups of Microorganisms: Bacteria (prokaryote) Commensal bacteria Opportunistic bacteria Pathogenic bacteria

PHPR 813 EXAM 1 QUESTIONS WITH COMPLETE SOLUTIONS!!

PHPR 813 EXAM 1 QUESTIONS WITH COMPLETE SOLUTIONS!!

Fungi - -Eukaryotes -have: nucleus, mitochondria, and endoplasmic reticulum -Differ from mammalian cells by: rigid cell wall, cell wall sterol is ergosterol rather than cholesterol Polymers that give the cell wall rigidity - Glucan and Chitin Fungal Cells: Chitin and Glucans: - -Responsible for rigidity - both are potential targets for antifungal drugs

What are bacterial nucleic acids DNA (forms a nucleoid) and Plasmids How many base pairs in bacterial DNA several million Roughly how many base pairs in plasmids ~20,000 What are the subunits in prokaryotic ribosomes 50S and 30S = 70S sedimentation Which ribosomal subunit can help identify a specific microbe 30S subunit

What are the different types of bacteria? - Commensal, opportunistic, pathogenic Bacteria are prokaryotes (have nucleus) What are the different kinds of fungi? - Yeast and mold Fungi are eukaryotes What are the different kinds of Protozoa? - Free-living and parasitic

Malaria - Caused by Anopheles Sp. / Plasmodium spp. 250 million annual cases - 1 million deaths 1 in 5 childhood deaths in africa pregnant women are high risk of dying cannot donate blood for 3 months after travel, 3 years after living there parasitic infection Plasmodium falciparum - malaria short incubation severe malaria cases majority of US malaria cases

staphylococcus (staining) gram positive staphylococcus (arrangement) chains or pairs staphylococcus (blood agar) hemolysis staphylococcus (surface atnigens) Lancefield Group staphylococcus (shape) cocci staphylococcus (catalase) positive

What mosquito species carries malaria? Anopheles While mosquitos can be one route for malaria transmission, what is the other? Transfusion of contaminated blood products How long should you wait before donating blood after traveling to malaria endemic areas? 3 months How long should you wait before donating blood if you are prior resident of malaria endemic areas? 3 years

What is the significance of Malaria? - common around the world, except the U.S - pregnant women are at high risk of dying from malaria and/or having complications - transported trough mosquitoes (Anopheles sp.) What was used to controlled Maleria in the US before 1950's? DDT (but was banned- causing mammals die)