Existence of Life on Earth

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

• primordial soup
• bubble hypothesis
• Miller-Urey Experiment
• radioactive dating theory

What is meant by the term "evoloution"?

• change over time
• increasing complexity
• mutation
• increasing in numbers

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

NGSS.MS-LS4-4

What allowed larger, more complex life to form during ancient Earth?

• oxygen in the oceans and atmosphere
• carbon dioxide increased in the atmosphere
• high energy, inorganic compounds

Tags

NGSS.HS-LS2-5

Which of the following describes what the first life form resembled?

• Eukaryotes
• Plants
• Bacteria
• Fungi

Cells without a nucleus are said to be _____________________.

• Eukaryotic
• Prokaryotic

What gas was necessary for complex (eukaryotic) life to evolve?

• Carbon dioxide
• Oxygen
• Dihydrogen monoxide
• Methane

Abiogenesis

• a change in a species over time; process by which modern organisms have decended from ancient organisms

• A theory that life comes from non-living objects

• The species from whom a current one has decended

• A theory that life come from life

Ancestor

• The species from whom a current one has descended

• The process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest

• A theory that life come from life

• Inherited characteristic that increase an organisms chance of survival

Tags

NGSS.HS-LS4-1

The early Earth's atmosphere was lacking:

• Carbon Dioxide

• Water

• Lightning

• Oxygen

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NGSS.HS-ESS1-6

What type of organisms created oxygen for early life on Earth?

• Heterotrophic Bacteria

• Photosynthetic Bacteria

• Animals

• Plants

Tags

NGSS.HS-LS2-5