Inventions and Discoveries

36. Who invented the telegraph?
a) Samuel Morse
b) Alexander Graham Bell
c) Guglielmo Marconi
d) Thomas Edison

37. Who discovered the laws of heredity?
a) Gregor Mendel
b) James Watson
c) Francis Crick
d) Thomas Hunt Morgan

38. Who invented the first successful airplane?
a) Wilbur and Orville Wright
b) Samuel Pierpont Langley
c) Otto Lilienthal
d) Alberto Santos-Dumont

39. Who discovered penicillin?
a) Alexander Fleming
b) Louis Pasteur
c) Robert Koch
d) Paul Ehrlich

40. Who invented the printing press?
a) Johannes Gutenberg
b) Leonardo da Vinci
c) Isaac Newton
d) Galileo Galilei