Origin of Life - Scientific Contributions

​Origin of Life

SCIENTIFIC CONTRIBUTIONS

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• IDENTIFY SITUATION OR CONDITIONS CONTRIBUTING TO THE ORIGIN OF LIFE ON EARTH.

• gIVEN VARIUS SCIENTIFIC CONTRIBUTIONS ASSESS HOW THEY AIDED IN THE DEVELOPMENT OF THE SCIENTIFIC EXPLANATION OF THE ORIGN OF LIFE.

UNIT 3 TOPIC 4: ORIGIN OF LIFE​

Multiple Choice

Identify the claim and evidence of Pasteur's experiment that contributes to the the origin of life.

• Claim: Life only comes from life.

  Evidence: The broth in the covered flask did not grow bacteria.

• Claim: Life spontaneously generates (appear)

  Evidence: When the flask with broth is exposed to the air, bacteria forms out of nowhere.

Multiple Choice

Identify the claim and evidence of Oparin's hypothesis that contributes to the the origin of life.

• Claim: First life forms from naturally occurring chemical reactions.

  Evidence: The results of the experiment show that through chemical reactions, amino acids (special molecules of life) were produced.

• Claim: Chemical reactions take place eventually producing living cells.

  Evidence: The early ocean simulated a primordial soup, rich in carbon based molecules that engage in chemical reactions.

Multiple Choice

Identify the claim and evidence of Miller-Urey's experiment that contributes to the the origin of life.

• Claim: First life forms from naturally occurring chemical reactions.

  Evidence: The experiment results show that through chemical reactions, amino acids (special molecules of life) were produced.

• Claim: Chemical reactions take place eventually producing living cells.

  Evidence: The early ocean simulated a primordial soup, rich in carbon based molecules that engage in chemical reactions.

Multiple Choice

Lynn Margulis developed the Endosymbiotic Theory. According to the information in the video, identify the claim and evidence for this theory.

• Claim: Chloroplasts engulf mitochondrial cells and are able to do both photosynthesis and cellular respiration.

  Evidence: Chloroplasts and mitochondria evolved from small bacteria that use sunlight as a source of energy.

• Claim: Large cells engulfed small bacteria that could do either photosynthesis or respiration evolved into organelles.

  Evidence: Over time the small bacteria within the large cell that use oxygen evolved into mitochondria and the bacteria that use sunlight evolved into chloroplast.

Multiple Choice

Identify the claim from Sidney Fox's experiment that builds on the findings of the Miller-Urey experiment.

• Amino acids spontaneously from into proteins that give rise to living things.

• Naturally occurring chemical reactions of natural gases produces amino acids.