Think you're caffeine savvy? Take this short quiz and find out your Caffeine IQ! Which substance in the brain, which causes drowsiness, is blocked by caffeine, producing its stimulating effect?SerotoninDopamineMelatoninAdenosineTryptophanPeople of which ethnic derivation are believed to have greater sensitivity to caffeine?AfricanNative AmericanArmenianSouth AsianCaribbeanWhich country consumes the most coffee in the world (per person)?SwedenFinlandUnited StatesBrazilFranceIn what decade was cola first introduced?1860s1880s1890s1900s1920sWhich country produces the world's most coffee?ColombiaBrazilEthiopiaIndonesiaVietnamWhere was tea first brewed as a beverage?IndiaArabiaMeso-AmericaChinaEnglandAfter water, which beverage is the world's most widely consumed?MilkCoffeeSoda/carbonated beveragesTeaBeerHow many plants contain caffeine?101560180500TRUE or FALSE: Energy drinks contain more caffeine than a typical cup of coffee.TrueFalseWhat percentage of Americans say they consume caffeine daily?45%60%75%85%90%