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lec 15-19
quiz questions
| Question | Answer |
|---|---|
| Spoilage of canned foods stored at high temperatures, accompanied by gas production, is: | thermophilic anaerobic spoilage |
| Sedimentation of sludge occurs mainly in: | primary sewage treatment |
| In the ONPG and MUG test for fecal coliforms, a sample that is positive for E. coli will be: | positive for ONPG; fluorescent in UV light |
| The relationship between an infectious disease and a host is considered: | parasitism |
| Intense fever, shock, and other symptoms occur in some gram-positive bacterial infections due to: | superantigens |
| Which of the following contribute to a pathogen's invasiveness? | hyaluronidase |
| Which of the following would be the most likely to act as a diphtheria antitoxin? | An ADP-ribose inhibitor |
| The ability of some microbes, such as Trypanosoma or Giardia to alter their surface molecules and evade destruction by the host's antibodies is called: | antigenic variation |
| If a medical professional wished to know whether a disease originated from an animal, another human host, or from the environment, they would be trying to determine the: | etiology |
| Biological transmission differs from mechanical transmission in that biological transmission: | involves reproduction of a pathogen in an arthropod vector prior to transmission |
| Symptoms of disease differ from signs of disease in that symptoms: | are changes felt by the patient. |
| Which phylum has a high G+C content? | Actinobacteria |
| What is a defining feature of the Mycobacterium genus? | Cell walls contain mycolic acid |
| Which of the following cells would be safe from a natural killer (NK) cell's cytotoxicity? | a self-cell presenting with MHC I molecules |
| Which of the following cells is usually found in mucous membranes and acts as an antigen-presenting cell (APC)? | dendritic cell |
| Which of these is a purpose of fever? | makes pathogenic microbe reproduction harder |
| The function of resident flora in immunity is to: | take away habitat and nutrient availability from pathogens |
| Phagocytes bind to pathogen-associated molecular patterns (PAMPs) via: | pathogen-recognition receptors (PRRs) |
| MHC I molecules presenting a pathogenic antigen would be recognized by and therefore activate what cell? | TC cell |
| Which of these is not an important role that antibodies carry out themselves? | Performing phagocytosis of pathogens |
| Salmonella is able to enhance its____ by preventing fusion of the phagosome with the lysosome. | invasion |
| Which of the following provides the most information for cause and effect and controls for the most variables? | experimental epidemiology |
| droplets with infectious particles that travel more than 1m is considered___ | vehicle transmission |
| ADCC is a process that is most effective in destroying: | eukaryotic pathogens |
| Signs and symptoms are usually too generic to diagnose in what period of disease? | Prodromal period |
| Streptococcus pyogenes has what kind of hemolysis? | b-hemolytic |
| What part of immunity is humoral immunity part of? Adaptive or innate? | adaptive |
| Which one of these choices is a pathogen-associated molecular pattern (PAMP)? | LPS |
| _____ on the skin can prevent pathogens from establishing an infection through hair follicles. However, those same pathogens may be able to get around that protection if they enter the body through the ___ | normal microbiota; parental |
| What valence does IgM have in the serum? | 10 |
Created by:
eannec