Spallanzani

Definition

Lazzaro Spallanzani was an 18th-century Italian biologist and physiologist who conducted experiments to disprove the theory of spontaneous generation. His work laid foundational principles for modern microbiology, particularly through his studies on microbial life.

5 Must Know Facts For Your Next Test

1. Spallanzani conducted experiments with boiled broth to show that microorganisms came from the air and not spontaneously generated.
2. He demonstrated that sealed flasks containing boiled broth remained free of microorganisms unless exposed to the air.
3. His work provided significant evidence against spontaneous generation, a prevailing theory at the time.
4. Spallanzani's findings were later confirmed and expanded upon by Louis Pasteur.
5. He also made contributions to the study of animal reproduction and the physiology of digestion.

Review Questions

• What was the main conclusion of Spallanzani's experiments with boiled broth?
• How did Spallanzani's experiments challenge the theory of spontaneous generation?
• Which later scientist confirmed Spallanzani's findings on microbial life?

Related terms

Louis Pasteur: French scientist who conducted similar experiments to disprove spontaneous generation and developed pasteurization.

Spontaneous Generation: The outdated theory that life can arise from non-living matter without any biological processes.

Microbiology: The scientific study of microorganisms, including bacteria, viruses, fungi, and protozoa.