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 one limitation of the Miller-Urey experiment in explaining the origin of life.
Describe the importance of compartmentalization in the origin of life.
Describe the main criticism of the theory of spontaneous generation.
Describe the main idea behind the theory of panspermia.
Describe the main steps involved in the chemical evolution of life according to the Oparin-Haldane hypothesis.
Explain the difference between abiogenesis and biogenesis.
Explain the role of hydrothermal vents in theories about the origin of life.
Explain the significance of the 'primordial soup' in theories about the origin of life.
The theory of panspermia suggests that life originated: (1) From deep-sea vents (2) From outer space (3) In shallow ponds (4) In volcanic craters
Which experiment provided the first experimental evidence supporting the abiotic synthesis of organic molecules? (1) Pasteur's swan-neck flask experiment (2) Miller-Urey experiment (3) Hershey-Chase experiment (4) Griffith's transformation experiment
Which of the following best describes a protocell? (1) A fully functional cell (2) A self-replicating RNA molecule (3) An aggregate of abiotically produced molecules surrounded by a membrane (4) A fossilized microorganism
Which of the following best describes the process of chemical evolution? (1) Evolution of multicellular organisms (2) Formation of complex organic molecules from simpler inorganic molecules (3) Natural selection acting on populations (4) Fossilization of ancient life forms
Fill in the blank: The first cells are believed to have been __________, meaning they did not require oxygen for survival.
Fill in the blank: The first living organisms on Earth are believed to have been __________.
Fill in the blank: The first step in the origin of life was the formation of __________ molecules from inorganic substances.
Fill in the blank: The hypothesis that RNA molecules were the first self-replicating systems is known as the __________ hypothesis.
The Miller-Urey experiment demonstrated that organic molecules could be synthesized from inorganic precursors under conditions thought to resemble those of early Earth. True or False?
True or False: The first genetic material is believed to have been DNA.
True or False: The first living organisms are believed to have been heterotrophic.
True or False: The first self-replicating molecules were likely proteins.
