In a species of ant, dead individuals are usually consumed by the other ants. A fungal pathogen is introduced into this species; it produces fungal spores within the host but they are not secreted by living ants or passed on to offspring. At introduction, the pathogen kills 10% of infected ants. How would you expect the virulence of the pathogen to evolve? Virulence will decline to zero. Virulence will stay the same. Virulence is expected to increase.

You’ve been noticing that a local pond has developed a green scum that is getting thicker and thicker. When you look into the water, you see fewer fish and other animals than you used to, and you see fewer birds around the pond. Based on what you learned in this chapter, what is this process called? What are two possible causes. Explain in 10 sentences or more

Which of the following would NOT be considered as virulence factors? Group of answer choices Lipases Adhesins Capsules Peptidoglycan Proteases

Use this information to anwer the question: Babesia microti is a red cell parasite that is endemic in the Northeastern and upper Midwestern regions of the US and responsible for the disease referred to as babesiosis. The parasite is most often transmitted by the bite of a deer tick but may also be transmitted by blood. Infection may be asymptomatic or cause non-specific symptoms: fever, fatigue, headache and muscle pain, or in some cases severe disease in those with a compromised immune system, hemoglobin-related diseases (such as sickle cell disease) or those lacking a spleen. The Red Cross began blood donation screening under an investigational protocol in June 2012 in the New England area and upper Midwest. Donors who consented for investigational screening were tested by two tests: an individual donation NAT assay (polymerase chain reaction, PCR) and an antibody assay, the latter using an automated indirect immunofluorescence assay (IFA). Reactive donations were further tested by…

Which of the following statements correctly describes exotoxins and endotoxins produced by various bacteria? A. endotoxins are secreted into the environment while the bacteria are still alive B. exotoxins are secreted into the environment while the bacteria are still alive C. exotoxins are only released into the environment when the bacteria die and their cell walls break down D. exotoxins are components of the outer membrane of the bacteria that produce them

Beaches are monitored to protect public health. Waterborne pathogens can cause illnesses. Which of the following is not a common type of pathogen at the beach? Bacteria Protozoa Viruses Worms

Please answer fast Which of the following statements regarding global disease are true? SELECT ALL THAT APPLY?   More virulent diseases may actually be spread less because of the severity of the symptoms may prevent human interactions.   In non-pandemic years, the leading cause of death is different for countries of different economic levels (high vs low).   None of the other answers are correct (select this answer only).   At one time, COVID-19 became one of the leading causes of death in the United States.   Both communicable and non-communicable diseases are in the top ten global causes of death regardless of income level of the country.

1, -n- is the capability of an organism to produce disease     2. A pathogen is a living organism causes disease in another living organism gains entrance into the body, usually through the skin or a body orifice must be able to adapt to a host environment and multiply all of the above

All of the following are true about the normal microbiota of humans EXCEPT: They are important for resistance against infection by pathogens They are present in large numbers in the upper respiratory tract and mouth They are present in large numbers on the skin Some are transient and others permanently colonize the host They can be found throughout the body, including all internal organs

10) Which of the following statements about the response of hosts to parasitic infections is FALSE?   Question 10 options:     Grooming by mammals and birds is a defense against parasites.     If a parasitic infection occurs, the body often responds with an inflammatory defense, releasing histamines.     Some forms of defense against parasites are behavioral, such as deer avoiding deerflies by seeking dense, shaded areas.     An antibody response is the first line of defense when a parasitic infection occurs.     Plants cut off contact between fungal parasites and healthy tissue by forming cysts or scabs.