Podcast
Questions and Answers
What is the primary cause of mass extinction events?
What is the primary cause of mass extinction events?
- Changing concentrations of atmospheric gases (correct)
- Volcanic eruptions
- Shifts in the Earth's axis
- Asteroids hitting the earth
What geological event captured the process of oxygenation of the Earth's atmosphere?
What geological event captured the process of oxygenation of the Earth's atmosphere?
- Cambrian Explosion
- Burgess Shale formation
- Great Oxygenation Event (correct)
- Snowball Earth hypothesis
Which group of organisms played a crucial role in the endosymbiotic event that led to photosynthetic eukaryotes?
Which group of organisms played a crucial role in the endosymbiotic event that led to photosynthetic eukaryotes?
- Cyanobacteria (correct)
- Alphaproteobacteria
- Archaea
- Eukaryotes
What is the name of the fossil site that contains diverse fossils of multicellular organisms from the Cambrian Explosion?
What is the name of the fossil site that contains diverse fossils of multicellular organisms from the Cambrian Explosion?
What atmospheric gas has increased significantly in concentration over the last 200 years?
What atmospheric gas has increased significantly in concentration over the last 200 years?
What is the approximate time frame when an endosymbiotic event between cyanobacteria and eukaryotes led to photosynthetic eukaryotes?
What is the approximate time frame when an endosymbiotic event between cyanobacteria and eukaryotes led to photosynthetic eukaryotes?
What is the role of hemagglutinin and neuraminidase in influenza virus?
What is the role of hemagglutinin and neuraminidase in influenza virus?
What percentage of all species on Earth are constituted by mammals?
What percentage of all species on Earth are constituted by mammals?
Why is DNA a better information storage molecule than RNA?
Why is DNA a better information storage molecule than RNA?
What is a function of gut microbes?
What is a function of gut microbes?
Which statement about pathogenic microorganisms is correct?
Which statement about pathogenic microorganisms is correct?
What is the term for the independent evolution of similar traits?
What is the term for the independent evolution of similar traits?
What does the photograph taken by a former Biology 170 student in northwestern Montana show?
What does the photograph taken by a former Biology 170 student in northwestern Montana show?
What is true about life on Earth for about the first two billion years after its formation?
What is true about life on Earth for about the first two billion years after its formation?
What is a characteristic of the cyanobacterium Prochlorococcus?
What is a characteristic of the cyanobacterium Prochlorococcus?
How do Influenza viruses store their genetic material?
How do Influenza viruses store their genetic material?
Why are Influenza viruses so dangerous?
Why are Influenza viruses so dangerous?
What is a unique characteristic of Influenza viruses' genetic material?
What is a unique characteristic of Influenza viruses' genetic material?
What is the term for the process by which an organism acquires new DNA from a donor organism?
What is the term for the process by which an organism acquires new DNA from a donor organism?
What is the term for an RNA that can catalyze a chemical reaction?
What is the term for an RNA that can catalyze a chemical reaction?
What is the hypothesis that suggests viruses are the descendants of degenerated cells that lost autonomy and became obligate parasites?
What is the hypothesis that suggests viruses are the descendants of degenerated cells that lost autonomy and became obligate parasites?
What is true about all autotrophs?
What is true about all autotrophs?
What is the term for a group of organisms that includes a common ancestor and all of its descendants?
What is the term for a group of organisms that includes a common ancestor and all of its descendants?
What is the term for a characteristic that is shared by two or more groups of organisms, but is not present in their common ancestor?
What is the term for a characteristic that is shared by two or more groups of organisms, but is not present in their common ancestor?
What is unique about the energy metabolism of the bacterium Thermocrinis ruber?
What is unique about the energy metabolism of the bacterium Thermocrinis ruber?
What is the energy source used by the bacterium Desulfotomaculum?
What is the energy source used by the bacterium Desulfotomaculum?
What is a characteristic of all phototrophs?
What is a characteristic of all phototrophs?
What is true about anaerobic chemoheterotrophs?
What is true about anaerobic chemoheterotrophs?
What is a common characteristic of life at near boiling temperatures in Yellowstone National Park?
What is a common characteristic of life at near boiling temperatures in Yellowstone National Park?
What is a possible usable source of energy for organisms?
What is a possible usable source of energy for organisms?
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