Alternative Tune: "I know I'm being used, that's okay man cause I like the abuse"?

Questions

In which Latin American country is the Quetzal the main unit of currency?

From which large South American country do the beers 'Brahma Chopp' and 'Antarctica' come?

What is the name given to the science of improving the population by controlled breeding?

Which English poet wrote 'No man is an island, entire of itself.'?

Which British physician, 1749 to 1823, developed the first effective vaccine against smallpox?