52. During the development of a new vaccine, an investigator generates a mutant strain of bacteria that does not adhere to mucosal epithelia, Mutations in which of thefollowing bacterial components or structures would most likely prevent bacterial adhesion?htbaOA) CapsulesOB) FlagellaOC) LipopolysaccharideOD) Lipoteichoic acidOE) PiliOF) PorinsOG) SiderophoresOH) Sporesin 1thou (moon)Pili

Vaccine: A vaccine is a biological preparation that provides immunity against a particular disease.…

Answered: 52. During the development of a new…

Phlebotomy Essentials

6th Edition

ISBN:9781451194524

Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)

Chapter1: Phlebotomy: Past And Present And The Healthcare Setting

Section: Chapter Questions

Problem 1SRQ

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Pathogenic infections induce damage to the host by a variety of mechanisms. While many mechanisms are direct effects of the pathogen, some damaging mechanisms result from the immune response to the infection. Examples of damage caused by the host immune response are: a) Exotoxin production, endotoxin b) Cell-mediated inmunity, direct cytopathic effect c) Endotoxin, inmmunune complexes d) Direct cythopathic effect, endotoxin e) Cell-mediated inmunity, inmmunune complexes
Which of the following virulence factors among A-D is correctly matched with its definition or characterization? A) O Invasins: pathogen proteins that prevent opsonization of the pathogen B) O Phase variation: allows pathogen to switch between different forms of an extracellular antigen (e.g., flagellum) C) O Protein A. a microbial factor that allows for attachment, typically a surface protein or surface glycoprotein D) O Prevention of lysosome:phagosome fusion mechanism employed by an extracellular pathogen E) OM protein, Opa protein: enzymes that interfere with the functioning of antibodies
a "persistent infection" is best described as: A) chronic infection in which viral genes are not expressed and viral proteins are NOT made B) an infection in which the viral nucleic acid does NOT persist/stay in the host cell C) A general term that describes all chronic/long-term infections D) chronic infection in which viral proteins are constantly made E) chronic infections that usually do NOT have a fatal outcome
Which of the following BEST describes an agent that is bacteriostatic? A) It suspends bacterial synthesis of Tranexamic Acid. B) It kills the bacteria by destroying its cell wall. C) It zaps the bacteria with static electricity. D) It suspends bacterial growth.
A pathogen that has an extremely low LD50 would be A.) very contagious. B.) very communicable. C.) very deadly. D.) very difficult to treat. E.) very oncogenic.
7) Identify the most correct choice: a) The time required for a bacterial population to double is called generation time Ob) Nitrogen is required by the organisms mainly to produce ATP. c) Agar is a common food source for the bacteria. d) A colony is usually a mixture of various bacterial organisms. e) a and c
1-9
Rod-shaped bacteria grouped in pairs:Question 7 options: a) streptococci b) diplobacilli c) bivibrios d) staphylobacilli
Which of the following is true regarding pathogenic strains of Staphylococcus and Streptococcus, respectively? A) O Staphylococcus aureus is a common cause of sore throats. B) O Alpha-hemolytic Streptococci turn blood agar green and include members that cause pneumonia and tooth decay, C) Gamma-hemolytic Streptococci completely lyse red blood cells on blood agar. D) O The beta-hemolytic group of Streptococci does not contain any pathogenic types.
13) -Biocompatibility, is "The ability of a material to perform with an appropriate host response in a specific application". The below givens can be counted among appropriate host responses EXCEPT. a) Osseointegration b) Resistance to blood clotting, c) Resistance to bacterial colonization, d) Uncomplicated healing 14) The in vitro tests focus on below given assays. EXCEPT a) DNA damage, b) quantification of specific proteins as a sign of specific integration c) Tissue integration d) Dose-dependent cell proliferation
Practice q3 -What do most vaccines contain? a)Normal disease microbe b)Genetically altered microbe c)Dead or attenuated disease microbe d)Different disease microbe Practice q4 What metabolic product is squalene converted into in the human body? a)steroids b)Neurotransmitters c)Prostaglandins d)Histamine

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