Haemophilus infl uenzae is................ and requires special................. for growth. a. motile, temperatures c. intracellular, sample swabs b. encapsulated, minerals d. fastidious, blood factors
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Haemophilus infl uenzae is................ and requires special................. for growth. a. motile, temperatures c. intracellular, sample swabs b. encapsulated, minerals d. fastidious, blood factors
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- Haemophilus influenzae is ________and requires special ____________for growth.a. motile, temperatures b. encapsulated, minerals c. intracellular, sample swabs d. fastidious, blood factorsDifferent strains of Streptococcus pyogenes have different virulence factors, giving these microbes much versatility. Virulence factors include which of the following? Choose one or more: A.A capsule that, when thick, will help the organism avoid phagocytosis by macrophages B.A cell wall containing lipoteichoic acid, thought to facilitate adherence to pharyngeal epithelial cells C.Enzymes that lyse blood cells (streptolysins) D.The production of several endotoxins called streptococcal pyogenic endotoxins (SPEs)Why would an antibiotic like amoxicillin be ineffective as a treatment for toxoplasmosis?
- why is Trypanosoma harmful?A. How many people a year die due to insecticide misuse and exposure? B. What does Bt stand for? C. What is the Bt delta endotoxin? D. What is the mode of action for this endotoxin and what is its target organism(s)?After a man infected with a Gram-negative bacterium was treated with the correct antibiotic for thispathogen, the bacterium was no longer found in the man’s blood, but his symptoms of fever andinflammation worsened. What caused the man’s response to the treatment? Why was his conditionworsened by the treatment?
- Why wouldn’t antibiotics work as therapy for botulism?Which of the following is NOT true about dental plaque?(a) It is an intermittently formed coating of microbes andorganic matter on tooth surfaces that serve as the firststep in tooth decay and gum disease.(b) It begins as positively charged salivary proteins adhereto negatively charged enamel surfaces, forming a pellicle(film) over the tooth surface.(c) Streptococcus mutans attaches to the pellicle where ithydrolyzes sucrose to fructose and glucose, or polymersof glucose that serve as bridges, holding together cells inplaque.(d) Plaque consists of up to 30 different genera of bacteriaand their products, such as polymers of glucose (dex-tran), saliva proteins, and minerals.(e) Plaque that is allowed to accumulate in crevices near thegumline can change into anaerobic pockets full of bacte-ria that can irritate the gums or destroy underlying bone.Explain how the body (including cells, organs, organ systems) is affected by the bacterium called Neisseria meningitidis? Are there any long-term effects caused by the bacterium, even after recovery?