An analysis unit for performing a polymerase chain reaction includes a cover element, a bottom element, at least one fluid channel, at least one pressure channel, and a film. The bottom element has at least one bottom hollow that defines a fluid-accommodating surface and an arrangement of microcavities, and that faces toward the cover element. The fluid channel is formed between the cover element and the bottom element in order to conduct a fluid onto the fluid-accommodating surface. The pressure channel is formed in the cover element in order to conduct a pressure into a region of the fluid-accommodating surface. The film is positioned between the cover element and the bottom element in a region of the bottom hollow, and is configured to deform in response to the pressure conducted through the pressure channel such that the fluid is moved through the fluid-accommodating surface into the arrangement of microcavities.