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All of the following are true of biological vectors EXCEPT:
Some of the most important global diseases, such as malaria and typhus, are transmitted by biological vectors
Pathogens reproduce in the vector as part of their life cycle
None of the above (All are true of biological vectors)
Many biological vectors are arthropods, such as insects or arachnids
Pathogens are passively transported on the vector's feet or body parts, without reproducing
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- Which of the following is a vector? fomite human tabletop flea b & dWhich of the following is not a vector? Fomite Human Fly Flea Fomite AND humanMcLaughlin and Petersen Laboratory Exercises in Microbiology A Review of the Vectors This vector is: This vector is: It transmits (organism) (organism) It transmits that causes (disease) (disease) that causes This vector is: This vector is: (organism) It transmits (organism) It transmits (disease) that causes (disease) that causes
- Which of the following is a primary contributing factor to Ergonomic hazards?Presence of heavy equipment Frequency of repetition Applied sustenance Transitional forces A female Anopheles mosquito comes in contact with a person's skin and probes it with its proboscis. This now has the potential to infect the person with malaria. What type of transmission is involved in the process?Airborne transmission Mechanical transmission Direct contact transmission Biological transmission Work is being done with Mycobacterium tuberculosis in the microbiology laboratory. It is important to prioritize safety when working in the laboratory since the pathogen can produce high risks. Thus, the following protective materials should be present in the laboratory, EXCEPT:AutoclaveEffluent decontamination system Air-purifying respiratorPositive pressure protective suitWhich of the following is a pyrimidine (one type of nitrogenous base) that is commonly found in all DNA molecules, but is not commonly found in all RNA molecules? adenosine cytidine thymine guanine uracil If retroviruses like HIV follow the historical pattern of a parasite adapting to a new host species (like syphilis in Europe over the past 500 years), then rapid virulence initially would likely be followed by: increasing virulence of the parasite, and decreasing resistance of the host increasing virulence of the parasite, and increasing resistance of the host decreasing virulence of the parasite, and decreasing resistance of the host decreasing virulence of the parasite, and increasing resistance of the host all of the above outcomes would be equally likelyIn terms of geographical distribution, are parasitic flagellates (e.g., Trypanosoma spp., Leishmania tropica, Giardia lamblia, Trichomonas) cosmopolitan or localized? Explain Discuss the relationship between vector distribution of some parasites and their vectors, if any? Do they exhibit vector specificity?
- discuss methods used to control vector-borne diseases, specifically mosquitos. 1) Is there one method you think is more beneficial than others when it comes to the controlling and prevention of mosquito-borne diseases? Why/why not? 2) Also, how large do you think is the impact of human environmental change (man's activities) on emerging infectious diseases in animals and man?An outbreak of a vector borne disease along a river system in centrla Uganda has been identified, triggering a national alert. Patients present with complex neurological symptoms and flagellated parasites have been isolated from local animals. Based on the above information, what pathogen do you suspect might be the cause? And why? To control the outbreak, what treatments and interventions would be the most effective?Below are a list of virulence factors/ strategies paired with an example of an organism that utilizes them. How do each of the following strategies contribute to the virulence of the pathogen? Strategy - Causes the host to produce more receptors (Organism - Rhinovirus) Strategy - Produces gas as a product of fermentation (Organism - Clostridium perfringens) Strategy - Produces a capsule (organism - Klebsiella pneumonia) Strategy - Ability to move between adjacent cells (organism - Cytomegalovirus) Strategy - Ability to use pilus as a motility structure (organism - Pseudomonas aerogenosa)
- Which one is true for majority of baculoviruses used as biological control agents? O They have been shown to have negative impacts on non-target insects like cotton bollworm These are excellent candidates for narrow: spectrum herbicidal applications Beneficial insects are being conserved They are species specific predators and are unable to harm the useful insectsA female Anopheles mosquito comes in contact with a person's skin and probes it with its proboscis. This now has the potential to infect the person with malaria. What type of transmission is involved in the process?Airborne transmission Mechanical transmission Direct contact transmission Biological transmissionArthropods transmit disease by injecting microbes when they bite a victim. This insect is classified as a ___ miasma fomite mechanical vector biological vector