Ch. 19 History of Life

A researcher who studies fossils to know about ancient life is a ____________.

• geneticist 
• biochemist
• paleontologist
• physicist 

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

During which era did dinosaurs dominate? 

• precambrian
• paleozoic
• cenozoic
• mesozoic

A _________ is evidence of an organism that lived long ago.

• strata
• fossil
• half-life
• radioactive isotope 

Tags

NGSS.MS-LS4-1

The atmosphere in ancient Earth was composed of: 

• mostly carbon dioxide & little to no oxygen
• mostly oxygen & nitrogen 
• mostly water vapor & oxygen 
• mostly sulfur & little to no oxygen  

Tags

NGSS.HS-ESS1-6

Earth formed ________ years ago.

• 4,600 
• 2 million 
• 4.6 billion 
• 1,200

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS1-6

______________ were the first organisms on Earth.

• humans
• dinosaurs 
• multicellular eukaryotes
• single-celled prokaryotes  

During the ___________ era there was a large increase in diversity of life forms followed by the largest mass extinction.

• Jurassic 
• Cenozoic 
• Paleozoic
• Precambrian 

Tags

NGSS.HS-LS4-5

What types of molecules were Miller & Urey able to produce through their experiments?

• inorganic
• amino acids
• ATP
• all of the above 

Tags

NGSS.HS-LS1-6

Mammals dominated during this era.

• cretaceous 
• Triassic 
• cenozoic
• precambrian 

Francesco Redi disproved spontaneous generation of large organisms when he…

• Created lightening in a jar
• Left meat in a covered jar & no maggots grew
• Created the atmosphere of ancient Earth
• Bacteria did not grow in a flask with broth