Early Life on Earth

What types of eukaryotes existed in early Earth?

• Unicellular

• Multicellular

Tags

NGSS.MS-LS1-1

What is a Ediacaran Biota?

• Fossils that show the impression of large, soft bodied prokaryotes.

• Fossils that show the impression of large, soft bodied eukaryotes.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

When did the atmosphere start to contain amounts of oxygen?

• Hadean era

• Archean era

• Proterozoic era

• Phanerozoic era

Tags

NGSS.HS-ESS2-7

NGSS.HS-LS1-5

Which is evidence that oxygen existed in the Proterozoic era?

• Red beds

• Stromatolites.

Tags

NGSS.HS-ESS1-6

What are Amino Acids?

Tags

NGSS.HS-LS1-6

What were the two microbial kingdoms that comprised life on Earth for the first 2 billion years?

• Bacteria and fungi

• Bacteria and archaea

• Archaea and fungi

• Archaea and plants

Tags

NGSS.HS-LS4-1

What is the significance of the recent breakthrough in culturing an elusive species of archaea?

• It sheds new light on the evolution of bacteria

• It confirms the existence of eukaryotes

• It provides insight into early complex life on Earth

• It disproves the theory of evolution

Tags

NGSS.HS-LS4-1

NGSS.HS-LS4-5

What is the significance of stromatolites in understanding early life on Earth?

• They are the oldest known fossils of early life forms

• They are evidence of early plant life

• They indicate the presence of early mammals

• They show the first signs of multicellular organisms

Tags

NGSS.HS-LS4-1

Which gas was primarily absent in Earth's early atmosphere?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Methane

Tags

NGSS.HS-ESS1-6

What role did cyanobacteria play in the development of early life on Earth?

• They were the first multicellular organisms

• They produced oxygen through photosynthesis

• They were the first to colonize land

• They were the first predators

Tags

NGSS.HS-LS4-5