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- 1. Multiple Choice
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
- 2. Multiple Choice
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
- 3. Multiple Choice
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.
- 4. Multiple Choice
The diagram below shows a proposed theory of the origin of eukaryotic cells, called endosymbiosis.
Which of the following explains why cells that contained mitochondria-like organelles had an evolutionary advantage?
They were able to photosynthesize
They had more DNA
They were able to make more use of available energy
They were immune to bacterial invasion.
- 5. Multiple ChoiceCells without a nucleus are said to be _____________________.EukaryoticProkaryotic
- 6. Multiple ChoiceWhat gas was necessary for complex (eukaryotic) life to evolve?Carbon dioxideOxygenDihydrogen monoxideMethane
- 7. Multiple ChoiceWhich type of cell came first?EukaryoticProkaryoticPlantBoth Eukaryotic and Prokaryotic cells evolved around the same time
- 8. Multiple ChoiceThe diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?Fossil A and C are the same ageFossil B is older than fossil CFossils A is older than fossil BFossil D is older than fossil C
- 9. Multiple ChoiceThe idea that Earth's early oceans had organic molecules that became the first life is called the...Primordial soup hypothesisBubble hypothesisMiller-Urey ExperimentRadioactive dating theory
- 10. Multiple ChoiceWhy is Deep Sea Vent Theory a possible explanation for life on Earth?It has biological communities and energyIt is dark and no oxygenIt has a light source and energy from the ventsHigh levels of electricity are generated there
- 11. Multiple Choice"Endosymbiosis" means...Living togetherLiving insideEntering togetherJoining together
- 12. Multiple ChoiceWhat process is shown within this diagram?Natural selectionEndosymbiosisChemical evolutionAbiogenesis
- 13. Multiple ChoiceThe theory of Endosymbiosis explains...The origin of eukaryotesHow species developHow bacteria evolvedWhy cells rely on one another
- 14. Multiple ChoiceWhich concept refers to life arising from non-living molecules?Organic evolutionChemical evolutionChemosynthesisPhotosynthesis
- 15. Multiple ChoiceEndosymbiosis gave rise togolgi bodieschloroplasts and mitochondrearibosomes and nucleithe rough and smooth endoplasmic reticulum
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