Advanced Microbiology Quiz

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2nd exam of advanced microbiology

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Martina Xian Porcel Obiols

Spain

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Advanced Microbiology Quiz


Advanced Microbiology QuizOnline version 2nd exam of advanced microbiology by Martina Xian Porcel Obiols 1 The term LD50 refers to… a The necessary dose of a given pathogen to reach the 50% of the living dose. b In a given growing culture, time needs to reach a stationary phase. c The necessary dose of given pathogen to kill the 50% of a healthy community. d The amount of antibiotics to stop a disease. 2 Within naturally acquired immunity… a Antibody immunity is transferred passively between individuals (e.g pregnancy and breast-feeding). b Defense mechanisms are generated by antigenic drift. c Defense mechanisms are acquired by gene transfer. d None of the other options. 3 Which of the following statements is true… a In order to increase the possibility of antibiotic treatments and face new antibiotic resistances, increasing of drugs are given to patients. b Microbes can not be fought with antibiotics. c In order to increase the possibility of antibiotic treatments and face new antibiotic resistances, semisynthetic drugs can not be generated so genetic modifications of microorganisms must be done. d In order to increase the possibility of antibiotic treatments and face new antibiotic resistances, semisynthetic drugs are modifications of parent molecules with better action. 4 Herd immunity is… a The immunity of new born members of a given community. b The immunity generated in a fraction of the community that will protect the whole community. c The immunity of the younger part of a given community. d The immunity of the elder part of a given community. 5 Among the following statements, which one better describes the microbiology concept of vector a A molecular tool to describe a pathogen. b Capacity of a virus for self-reproduction c Organisms that are able to carry and spread an infectious pathogen into another living host. d A microbial pathogen that causes disease. 6 The Baltimore viral classification is based on… a Genomic content (%GC) b Genome type c Genome size d None of the other answers 7 A typical antimicrobial agent must… a All correct b Kill pathogen c Protect host d Produce low host damage 8 In relation to E.coli grouping categories… a DEC includes up to six clear pathovars whereas no clear grouping could be defined for ExPEC. b All diarrheagenic E. coli (DEC) produce diarrhea whereas extraintestinal pathogenic E. coli (ExPEC) does not affect the intestinal tract. c Known DEC induces an unbalance of osmosis status in the intestinal tract. d All are true. 9 Based on seminars, which of the following statements is true: a There’s an increasing use of culture based methods to face new problems. b Sequencing approaches are discarded due to cumulative errors. c There’s an increasing use of new and modern technologies and approaches to solve traditional and new problems. d None of the other options. 10 The changes in the serotype of influenza virus are… a Antigenic tox b Antigenic shock c Antigenic shift d None of the other options 11 Unfortunately, some of the proposed texts for seminar expositions were… a All are correct b Schematic and difficult to read c Very difficult to understand and follow up d Too dense and boring 12 One of the main characteristics of the immune systems is… a The need for common and general response b The capacity to distinguish between self and non-self c The capacity to not induce individual recovery d The increase in passivity 13 Which of the following statements is true with respect to Mycobacterium tuberculosis a a. All the options are correct 14 As observed through the big part of the seminars, the relation between the human microbiome and its host (i.e humans) a There’s no such a correlation b Depends on the virus state c Simple and unidireccional d Multidirectional and complex 15 Which is a good method to test the antibiotic susceptibility profile of a microbe a Voges-Proskauer media b Kirby-Bauer method c Muller-Hilton growing curve d None of the other responses 16 The non-specific immune response is the collection of… a Cells and mechanisms that provide withfirst and innate immune responses. b Collection of mechanisms providing increased protection every time that a host face foreign agent. c Microbial mechanisms to protect themselves from harmful environmental conditions. d Immune cells acquired by vaccination 17 The naked genome of a ssRNA antisense (ssRNA-) virus is infective… a When RNAse inhibitors are present b When reach the host nucleic exclusively c Never d Always 18 Which of the following statements corresponds to one of Koch’s postulates a Koch never describes the presence of a pathogenic microbe b Putative pathogens must be always present in healthy and disease-suffering individuals. c Putative pathogen must isolated from individuals suffering disease and not from healthy ones d Putative pathogens must never be isolated into culture. 19 Diseases like Bovine Spongiform Encephalopathy and Creutzfeldt- Jakobs are caused by ________________, which are _________ folded _____________ a Prions / Abnormally / Proteins b Virions / Abnormally / RNA proteins c Virus / Abnormally / DNA molecules d None of the other options 20 Within the following statements, one bacterial species (B) is more virulent than another bacterial species (A) when… a We can not do such comparison, this concept is only used when comparing strains of the same specie as function of the LD50 b Virulence can only applied to viral diseases, that’s the reason for its name. c The bacterial species B needs a higher number of cells to produce disease in comparison to the bacterial species A. d The bacterial species B needs less number of cells to produce disease in comparison to the bacterial species A. 21 Which are the main destinations of a virus infected… a Apoptosis b Cell death c Transformation d All options are true 22 How do we call those virus that do not possess lipid bilayer a Transcripts b Naked c Encapsulated d With envelope 23 Which is the common chemical composition of all viral particles? a Proteins b DNA, proteins and lipids c Nucleic acids and proteins d DNA and RNA 24 Which of the following statements better describe the concept virulence factor a The collection of mechanisms and molecules that will allow a pathogen to outcompete host immune cells and evade immune defenses to finally produce disease. b The collection of proteins that promotes pathogen death. c The exclusive collection of molecular signals that allow a pathogen to rest in a dormant stage in a host. d None of the other options. 25 Which statement do not represent the characteristics that differentiate innate from acquired immunity a Not-antigen specific / Antigen specific b No immunological memory after exposure / immunological memory after exposure. c None of the others represents the characteristics of both immunities d Fast response / recognition time response 26 Which of the following is a good definition for Minimum Inhibitory Concentration for an antibiotic a Lowest concentration of a substance that prevents visible growth of a pathogen after overnight growth. b Highest concentration of a substance that kills a pathogen after overnight growth. 27 Which of the following is a good definition for vaccine a Combination of environmental conditions that induces short-term protective immunity in the host. b Combination of molecules that promotes viral growth in the host. c Combination of non-antigenic substances to promote viral growth. d Combination of one or more antigens that induces long-term protective immunity in the host. 28 The capability of microbes or viruses to escape and avoid the immune system of the host will allow them to… a Survive in the host b Promote disease status in the pathogen c Dye in the host 29 Which is the main pathogenic mechanism of Neisseria meningitidis a Crossing of epithelial cells from the intestine b Crossing of the blood brain barrier c Crossing of respiratory tract epithelial cells d Crossing of urinary tract epithelial cells 30 In any infectious disease process… a Physical or physiological effects are evident after ending the disease period b None of the other options c Physical or physiological effects are always present and detectable d There is a list of characteristic signs and symptoms that alert of disease.

Advanced Microbiology Quiz

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Advanced Microbiology QuizOnline version

by Martina Xian Porcel Obiols

The term LD50 refers to…

Within naturally acquired immunity…

Which of the following statements is true…

Herd immunity is…

Among the following statements, which one better describes the microbiology concept of vector

The Baltimore viral classification is based on…

A typical antimicrobial agent must…

In relation to E.coli grouping categories…

Based on seminars, which of the following statements is true:

The changes in the serotype of influenza virus are…

Unfortunately, some of the proposed texts for seminar expositions were…

One of the main characteristics of the immune systems is…

Which of the following statements is true with respect to Mycobacterium tuberculosis

As observed through the big part of the seminars, the relation between the human microbiome and its host (i.e humans)

Which is a good method to test the antibiotic susceptibility profile of a microbe

The non-specific immune response is the collection of…

The naked genome of a ssRNA antisense (ssRNA-) virus is infective…

Which of the following statements corresponds to one of Koch’s postulates

Diseases like Bovine Spongiform Encephalopathy and Creutzfeldt- Jakobs are caused by ________________, which are _________ folded _____________

Within the following statements, one bacterial species (B) is more virulent than another bacterial species (A) when…

Which are the main destinations of a virus infected…

How do we call those virus that do not possess lipid bilayer

Which is the common chemical composition of all viral particles?

Which of the following statements better describe the concept virulence factor

Which statement do not represent the characteristics that differentiate innate from acquired immunity

Which of the following is a good definition for Minimum Inhibitory Concentration for an antibiotic

Which of the following is a good definition for vaccine

The capability of microbes or viruses to escape and avoid the immune system of the host will allow them to…

Which is the main pathogenic mechanism of Neisseria meningitidis

In any infectious disease process…

Diseases like Bovine Spongiform Encephalopathy and Creutzfeldt- Jakobs are caused by ____________, which are _ folded _________