Given the question: Generate a question about the following movie plot: In 1952, a semester before Ernesto "Fuser" Guevara is due to complete his medical degree, he and his older friend Alberto, a biochemist, leave Buenos Aires in order to travel across the South American continent in search of fun and adventures. While there is a goal at the end of their journey - they intend to work in a leper colony in Peru - the main purpose is tourism. They want to see as much of Latin America as they can, more than 8,000 kilometers (5000 miles) in just a few months, and also bed as many Latin American women as will fall for their pick-up lines. Their initial method of transport is Alberto's ancient and leaky but functional Norton 500 motorcycle christened La Poderosa ("The Mighty One").Their route is ambitious. They head south, aim to cross the Andes, travel along the coast of Chile, across the Atacama Desert and into the Peruvian Amazon and reach Venezuela just in time for Alberto's 30th birthday, April 2. Due to La Poderosa's breakdown, they are forced to travel at a much slower pace, and make it to Caracas in July.During their expedition, Guevara and Granado encounter the poverty of the indigenous peasants, and the movie assumes a greater seriousness once the men gain a better sense of the disparity between the "haves" and "have-nots" of Latin America. In Chile, the pleasure travelers encounter a couple forced onto the road because of their communist beliefs. In a fire-lit scene, Ernesto and Alberto admit to the couple that they are not out looking for work as well. The duo accompany the couple to the Chuquicamata copper mine, and Guevara becomes angry at the treatment of the workers. There is also an instance of recognition when Ernesto, on a river ship, looks down at the poor people on the smaller boat hitched behind. Ernesto's connection to people in need is visceral and tactile throughout the film. It shows in the way he smoothes the forehead of a terminally ill woman who cannot afford a proper doctor.However, it is a visit to the Incan ruins of Macchu Picchu that inspires something...
The answer is:
What subject was Ernesto studying?