Origin of Life Theories
Biology ⇒ Evolution and Diversity
Origin of Life Theories starts at 10 and continues till grade 12.
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Describe how the presence of oxygen in the atmosphere affected the evolution of life on Earth.
Describe one piece of evidence that supports the RNA world hypothesis.
Describe one reason why deep-sea hydrothermal vents are considered a possible site for the origin of life.
Describe the main idea of the panspermia theory regarding the origin of life.
Describe the role of hydrothermal vents in the origin of life theories.
Explain the difference between the heterotroph and autotroph hypotheses for the origin of life.
Explain the main idea of the heterotroph hypothesis.
Explain why oxygen was not present in the early Earth's atmosphere according to most origin of life theories.
Which experiment provided evidence against the theory of spontaneous generation? (1) Miller-Urey experiment (2) Pasteur's swan-neck flask experiment (3) Hershey-Chase experiment (4) Griffith's experiment
Which of the following best describes a protocell? (1) A fully functional cell (2) A simple, membrane-bound structure with some life-like properties (3) A virus (4) A fossilized cell
Which of the following best describes abiogenesis? (1) Life comes from pre-existing life (2) Life comes from non-living matter (3) Life comes from outer space (4) Life is eternal
Which of the following best describes the conditions of early Earth that favored the origin of life? (1) Presence of free oxygen (2) High temperatures and reducing atmosphere (3) Abundant multicellular organisms (4) Stable climate and low energy
Fill in the blank: The first autotrophic organisms on Earth were likely __________.
Fill in the blank: The first cell-like structures that formed on Earth are called __________.
Fill in the blank: The first genetic material is thought to have been __________ rather than DNA.
Fill in the blank: The first simple cells are believed to have formed about __________ billion years ago.
True or False: According to the heterotroph hypothesis, the first living organisms were autotrophs.
True or False: The first living cells were likely prokaryotic.
True or False: The first living organisms on Earth were likely photosynthetic.
True or False: The first living organisms were likely anaerobic.
