Origin of Life - Day 2

Origin of Life - Day 2

Biological Evolution

Multiple Choice

One of the accepted scientific theories describing the origin of life on Earth is known as chemical evolution. According to this theory, which of the following events would need to occur first for life to evolve?

• onset of photosynthesis

• Synthesis of organic molecules

• origin of genetic material

• formation of the plasma membrane

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

• No other alternative hypotheses have been introduced

• 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

Multiple Choice

Miller/Urey and other scientists have shown that:

• Life on early Earth required material from space

• Amino acids could be produced from inorganic molecules

• Simple cells can be produced in a laboratory

• Cells survived in the primitive atmosphere

Multiple Choice

Which type of cell came first?

• Both Eukaryotic and Prokaryotic cells evolved around the same time

• Prokaryotic

• Eukaryotic

• Plant

Multiple Choice

Which types of organisms developed first due to the early environmental conditions on Earth?

• prokaryotic and aerobic

• eukaryotic and aerobic

• prokaryotic and anaerobic

• eukaryotic and anaerobic

Multiple Choice

The theory of Endosymbiosis explains...

• How bacteria evolved

• How species develop

• Why cells rely on one another

• The origin of eukaryotes

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.