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We live in close & constant association with millions of microorganisms, most of which do us no harm (commensals) and some which benefit us (mutualists). Distinguishing how the interactions between host & symbionts differ depending on the nature of the relationship (pathogenic vs non-pathogenic) is currently an active area of research. Using what you've learned, propose some possibilities for how commensal species, in contrast to infectious species, might live with us in peaceful symbiosis. Consider commenting on ways the immune system remains refractory to commensals, compared to pathogens.
Explain what causes gram-negative bacteria to stain pink. Explain what causes gram-positive bacteria to stain purple. Explain the purpose of iodine in the Gram stain procedure
What kind of environment or factors lead to the development of the trait of "wanting to survive and reproduce"?
Differentiate among the various elements of a material control system. Formulate a MRP based on projected production levels. Calculate capacity limits.
How much of the human genome is thought to be comprised of genes that encode proteins? Is this sufficient to explain the results of the human gene invisibility gun? What accounts for the part of the genome that does not encode protein?
A patient having renal surgery suddenly develops massive hypertension and dies during surgery. An autopsy shows the presence of a pheochromocytoma. In your own words, explain how this incident might have happened
What are the attributes of a particularly dangerous emerging infectious disease? What features of modern society influence dissemination of viral diseases of this nature?
state without explanation, any three common features regarding reptiles, birds and mammals.
What is an ion? a.) an atom that is sharing electrons with another atom b.) an atom that loses all of its protons c.) an atom that has lost one or more neutrons d.) an atom that has either gained or lost electron(s).
explain how an action potential, originating at the axon hillock, is propagated along myelinated and nonmyelinated axons.How are graded potentials made
Give an example of an area of research and science which requires a code of ethics when suggesting your modifications to the scientific method.
Activated T-helper cells aid in humoral immune responses by releasing cytokines which promote antibody production, phagocytosis, neutralization and apoptosis. Which parts of this statement are false and why? I know cytokines activate B cells and c..
Why are the phylogenetic relationships for Amphibia so contentious? How does this contrast with the challenges for determining phylogenetic relationships of Lepidosauria?
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