Several kinds of symbiotic relationships involve a fungus and a photoautotroph. Give two different examples of this kind of relationship. For the two examples, you choose, explain whether each relationship is parasitism, commensalism, or mutualism.

The relationship between humans and the gut microbes that live in humans can be bestdescribed as a:   Commensalistic relationship   Parasitic relationship   Taxonomic relationship   Mutualistic relationship

In a series of infection experiments, a researcher discovers that the ID50 value for the infectious bacterium Parasiticum mucoides is 100, and that the ID50 for another infectious bacterium, Donoteatum thisbacterium, is 15,000.  Given these data, a person exposed to 1,000 bacteria of each type would be more likely to be infected by which bacterium? Group of answer choices There is no way to know given the information provided Both infections are equally likely Parasiticum mucoides Donoteatum thisbacterium

The fruit fly Drosophila neotestacea carries a bacterial symbiont and can also be infected by a nematode worm. The figure shows the number of eggs produced by female fruit flies that are or are not infected by the nematode (two bars on the left vs two bars on the right) and that do or do not have the bacterial symbiont (red vs blue bars). 30 | Symbiont | No symbiont 25 15 10 5 Infected Not infected Assuming that the nematode benefits by being inside the fly, the fly- nematode relationship, when there is no bacterial symbiont, is best described as a(n). Select one: a. mutualism b. competition c. commensalism d. host-parasite relationship Number of eggs produced per ovary 20

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…

Mistletoe is a popular Christmas plant but in nature will grow on trees. It penetrates its roots into the tree it is growing on and consumes nutrients from the tree. What type of community interaction is this? Parasitism Commensalism (c) Mutualism Competition

Look at the graph and answer the question on the other image