Origins of Life

How many billions of years old is the universe?

• 4.6 billion
• 4.6 million
• 14 billion
• 14 million

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

What is the most critical thing for the development of life on Earth? 

• oxygen
• carbon dioxide
• time
• land

In a water molecule hydrogen and oxygen are bonded together by ___________. 

• Ionic bonds 
• Covalent bonds 
• Hydrogen bonds 
• Polar bonds 

Which property of water accounts for the others? 

• adhesion
• cohesion
• high specific heat
• polarity

Oceans do not freeze in winter due to which property of water?

• cohesion
• adhesion
• high specific heat
• all of the above

Tags

NGSS.HS-ESS2-5

Miller and other scientists have shown that:

•  life on early Earth required material from space
• cells survived in the primitive atmosphere
• amino acids and sugars could be produced from inorganic molecules 
• simple cells can be produced in a laboratory

Tags

NGSS.HS-LS1-6

 Which of the following was Stanley Miller able to produce in his 1953 experiment?

• prokaryotes
• amino acids
• lipids 
•  proteins

The following equation is an example of...
C5H12 + C3H7OH --> C8H18 + H2O

• Dehydration Synthesis
• Hydrolysis

The results of dehydration synthesis can be reversed by:

• condensation
• hydrolysis
• polymerization 
• adding an amino group