PHPR 813 EXAMS BUNDLE |study Questions with Complete Solutions

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...

Do gram + or - cells have an outer-membrane? gram negative What component of a bacterial cell is made of peptidoglycan? cell wall Describe the order of membranes in bacterial cells? Capsule (all cells) Outer membrane (gram - only) Cell wall (peptidoglycan) Cytoplasmic membrane

What are the 3 primary species that can be categorized as opportunistic fungi? - Candida - Aspergillus - Mucorales Which species of fungi is responsible for approximately 90% of opportunistic infections? Candida Which species of fungi is associated with causing opportunistic infections in indi...

peptidoglycan made up of ______________ 2 sugars - NAM and NAG are connected together - NAM has peptide side chain composed of 5 amino acids that coss-links Lipopolysaccharide component of the gram-negative outer cell membrane (also known as endotoxin - contributes to disease

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...

Are Mycobacterium gram positive or negative? How would you describe their shape? Gram positive bacilli (rods) Mycobacterium cell wall has high lipid content containing what? Mycolic acids and lipoarabinomannan Why is Mycobacterium hard to stain, and what stain must be used? -The wax like surfac...

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

Bacteria Structure Capsule, outer membrane (only in gram-negative bacteria), cell wall murein, cytoplasmic membrane, nucleus equivalent, plasmid, 70S ribosomes, depot substances (metaphosphates, glycogen), flagella, attachment pili Gram-Positive Bacteria Thick peptidoglycan membrane (cross-link...

What generation cephalosporin is ceftriaxone? third What properties enhance cefriaxone's efficacy? The ability to diffuse across porins and enhanced stability to beta-lactamase What types of streptococci are covered by ceftriaxone? S. pneumoniae and viridans streptococci

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...

Fungi How do Fungi differ from mammalian cells? - contain a rigid cell well - cell wall sterol is ergosterol rather than cholesterol What is responsible for the rigidity of fungal cells? - chitin - glucan (polymers of sugar)

PHPR 813 Study Questions with 100% Correct Verified Answers Is Mycobacterium gram positive or negative? gram positive (purple) Tell me something about Mycobacterium's cell wall it has a high lipid content (wax-like appearance) - mycolic acids - lipoarabinomannan Acid fast stain is used to d...

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- c...

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