Lecture 5 - The Tree of Life

Question 1

4 (Technically 5) Hypotheses on the origin of life

Answer 1

1. Special creation hypothesis
2. Interplanetary or Cosmozoic hypothesis
3. Spontaneous generation hypothesis
4. Biogeochemical hypothesis
   * Oparin-Haldane hypothesis
   * RNA world hypothesis

Question 2

Hypothesis involving myths that vary across cultures.
Overall say life was created by a supernatural being or divine forces. Based on faith and cannot be subjected to scientific inquiry or tested in a lab.

Answer 2

Special Creation Hypotheses

Question 3

States that life originated from a distant planet

Answer 3

Interplanetary/Cosmozoic Hypothesis

Question 4

Refers to the possible dispersion of life throughout the galaxy

Answer 4

Panspermia

Question 5

Refers to the deliberate seeding of life on Earth by intelligent beings

Answer 5

Directed panspermia

Question 6

Hypothesis that states living organisms could develop spontaneously from non-living matter

Answer 6

Spontaneous Generation Hypothesis

Question 7

Person who thought that some of the simpler invertebrates could arise by spontaneous generation

Answer 7

Aristotle

Question 8

People who disproved spontaneous generation theory

Answer 8

Francesco Redi
Lazzaro Spallanzani
Louis Pasteur