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– What special advantage does the capsule confer on the pathogen Streptococcus pneumoniae? – Why are those who have been vaccinated against Streptococcus pneumoniae more resistant to infection by this agent? Each year we see flu shots advertised just about everywhere. Many are required to get them due to their […]

Q1. What is the biodiversity? What are some of the most biodiverse ecosystems on the globe and how are humans impacting it? Is maintaining biodiversity essential for human sustainability? What can be done to keep today are current biodiversity levels? What are invasive species and how do they impact biodiversity? […]

The visits of the first robotic missions to the icy moons radically changed scientists’ conceptions of the suitability of these worlds to host life. Which of the following statements about this change in perception is true? Select each true statement (there may be several). A) Detection of radioactivity confirmed that […]

1. a hypothetical drug is administered which dilates blood vessels in the periphery (decreasing resistance) without directly affecting other tissues. Which of the following will occur as a consequence of administering this drug? a. an increase in blood pressure and an increase in cardiac outputb. an increase in blood pressure […]