Existence of Life on Earth

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?

The gas in the apparatus mimicked? 

• Early oceans
• The void of space
• Fusion reactions of stars
• Early Earth's atmosphere

The electrical sparks mimicked?

• The Sun's energy
• Lightning
• Volcanic eruptions
• Cosmic radiation

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What was the product of the Miller-Urey Experiment?

• Simple amino acids
• Simple nucleotides
• Simple lipids
• Simple monosaccarides

Tags

NGSS.HS-LS1-6

Miller/Urey and other scientists have shown that:

•  Life on early Earth required material from space
• Cells survived in the primitive atmosphere
• Amino acids could be produced from inorganic molecules 
• Simple cells can be produced in a laboratory

Which of the following was probably not present in the atmosphere of the primitive Earth? 

• Methane
• Oxygen
• Water
• Carbon dioxide

Tags

NGSS.HS-ESS1-6

The idea that Earth's early oceans had organic molecules that became the first life is called the...

• Primordial soup hypothesis
• Bubble hypothesis
• Miller-Urey Experiment
• Radioactive dating theory

Which statement best describes conditions on early Earth?

• hot with volcanic activity and electrical storms
• dry land covered with volcanic dust
• cold oceans
• dark and dusty with abundant water

Tags

NGSS.HS-ESS1-6

Why is Deep Sea Vent Theory a possible explanation for life on Earth?

• It has biological communities and energy
• It is dark and no oxygen
• It has a light source and energy from the vents
• High levels of electricity are generated there

Which of the following does not support the RNA world hypothesis, which states that RNA functioned as the first genetic material in early protobionts?

• Many of the most critical elements of cells are composed mostly or entirely of RNA.
• RNA has been demonstrated to act as a catalyst in modern cells.
• Modern cells use an RNA template when synthesizing proteins.
• In modern cells, RNA provides the template on which DNA nucleotides are assembled.