Reteach Origin of Life

Reteach Origin of Life

Multiple Choice

Which question were the scientists trying to answer with this experiment?

• Where do cells come from?

• How did prokaryotes form cell membranes?

• How are biomolecules formed?

• What gave rise to the Eukaryotic cell?

Multiple Choice

Miller/Urey and other scientists have shown that:

• Life on early Earth required material from space

• Cells survived in the primitive atmosphere

• Amino acids and other small organic molecules could be produced from inorganic molecules

• Simple cells can be produced in a laboratory

Multiple Choice

The Miller-Urey experiment of 1953 was designed to test the hypothesis that lightning supplied the energy needed to turn atmospheric gases into organic molecules such as amino acids. Which of the following describes why the Miller-Urey theory is widely accepted today?

• Amino acids spontaneously form from molecules in the atmosphere today

• Organic molecules are present today in extremely high concentrations

• The process of synthesizing organic molecules from a mixture of gases has been successfully modeled in the laboratory

• No other alternative hypotheses have been introduced

Multiple Choice

Based upon the conditions of the early Earth, which forms of live most likely appeared first?

• Prokaryotic and aerobic

• Prokaryotic and anaerobic

• Eukaryotic and aerobic

• Eukaryotic and anaerobic

Multiple Choice

The theory of Endosymbiosis explains...

• The origin of eukaryotes

• How species develop

• How bacteria evolved

• Why cells rely on one another

Multiple Choice

The diagram above shows a proposed theory of the origin of eukaryotic cells, called endosymbiosis.

Which of the following explains why cells that contained mitochondria-like organelles had an evolutionary advantage?

• They were able to photosynthesize

• They were able to make more use of available energy

• They had more DNA

• They were immune to bacterial invasion

Multiple Choice

The Endosymbiotic theory proposes that eukaryotic cells arose from living communities formed by the merging of

prokaryotic organisms and their hosts. Which of the following is the best evidence to support the Endosymbiotic theory?

• Both prokaryotic and eukaryotic organisms require oxygen in order to use energy.

• Mitochondria and chloroplasts contain DNA similar to bacterial DNA.

• Bacteria, mitochondria, and chloroplasts all divide by mitosis, while the cells containing them divide by binary fission.

• Bacteria and mitochondria contain many features that are similar to each other but different from those of chloroplasts.