The Origin of Life

Endosymbiotic Theory states that mitochondria are the descendants of prokaryotes that were engulfed by other organisms and eventually became organelles.

• true

• false

Tags

NGSS.HS-LS4-2

Which type of cell came first?

• Eukaryotic

• Prokaryotic

• Plant

• Both Eukaryotic and Prokaryotic cells evolved around the same time

Tags

NGSS.HS-LS4-2

Spontaneous generation is

• 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

Which of the following is the natural law that states that living organisms come only from other living organisms?

• evolution

• oxidation

• biogenesis

• spontaneous generation

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

• Heterotrophic Bacteria

• Photosynthetic Bacteria

• Animals

• Plants

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NGSS.MS-LS1-6

One of the accepted scientific theories describing the origin of life on Earth is known as chemical evolution. According to this theory, which of the following events would need to occur first for life to evolve?

• onset of photosynthesis

• origin of genetic material

• Synthesis of organic molecules

• formation of the plasma membrane

Tags

NGSS.HS-LS1-6

The Miller-Urey experiment of 1953 was designed to test the hypothesis that lightning supplied the energy needed to turn atmospheric gases into organic molecules such as amino acids. Which of the following describes why the Miller-Urey theory is widely accepted today?

• Amino acids spontaneously form from molecules in the atmosphere today.

• Organic molecules are present today in extremely high concentrations.

• The process of synthesizing organic molecules from a mixture of gases has been successfully modeled in the laboratory. 

• No other alternative hypotheses have been introduced.

These scientists proved that organic molecules formed from inorganic molecules present in the Earth’s early atmosphere when given energy from lightening.

• Lennon and McCartney

• Einstein and Newton

• Watson and Crick

• Miller and Urey

The image provided represents the following experiment to test Earth Early Atmosphere...

• Watson-Crick's DNA experiment

• Lynn Margullis Endosymbiotic Theory

• Miller-Urey Experiment

• Einstein's theory of general relativity

Which types of organisms developed first due to the early environmental conditions on Earth?

• prokaryotic and aerobic

• prokaryotic and anaerobic

• eukaryotic and aerobic

• eukaryotic and anaerobic