Amino Acids and their properties

Can you name the capitals cities of all 196 countries in the world?

Name the twelve countries that have the most people who speak German as their native language.

20 random countries have been removed from the map of the world! Can you identify them in 3 minutes?

You will be shown 10 random numbers between 1 and 100 without knowing what's next. Your task is to put them in order! But beware, if a number cannot be placed, the quiz ends...