Video: “Origins How Life Began”
Video: “Origins - How Life Began”
Integrated Science 2 Name: Per:
Summarize the 17th century “recipe” for creating life from scratch.
Describe the conditions on Earth 4 billion years ago.
Why are scientists interested in studying the caves in Mexico?
Describe the life in inside the caves.
all life forms
, bacteria grow,
bacterium is a molecule of
the molecule of life.
The bacteria inside the caves suggest that primitive life could have
in extremely hostile environments.
ingredients of life
What are amino acids?
Did Stanley Miller produce life in his lab simulation? Explain.
When do scientists believe the first life appeared on Earth?
What evidence do scientists use to support the appearance of the first life?
Why are scientists interested in studying space dust?
kinds of amino acids have been found in
What happened when amino acids were subjected to the intense pressures associated with meteorite impacts?
Where do scientists speculate that the “leap to life” may have occurred?
What do scientists believe that the mine bacteria use as food?
, bombardment of asteroids and comets stopped.
Once on the surface, what energy source were microbes able to take advantage of?
fossils in the world are
years old and are composed of
likely formed by colonies of
What important waste product was produced by stromatolites?
How did oxygen help protect life from the sun’s harmful ultraviolet radiation?
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