Intro to Astrobiology

<p>Looking for evidence of life, such as biosignatures</p> Signup and view all the answers

<p>SETI60</p> Signup and view all the answers

<p>Because Princess Ozma was the ruler of a fictional land of Oz</p> Signup and view all the answers

<p>To ensure the continuity of existence of species</p> Signup and view all the answers

<p>Using computer models to predict where and how life might exist</p> Signup and view all the answers

<p>National Radio Astronomy Observatory (NRAO) in Green Bank, West Virginia</p> Signup and view all the answers

<p>The presence of a strong magnetic field</p> Signup and view all the answers

<p>They demonstrate that life can thrive in extreme environments, suggesting the possibility of life on other planets</p> Signup and view all the answers

<p>The investigation of how life might have originated from non-living matter</p> Signup and view all the answers

<p>Complex organic molecules could form from simple molecules under early Earth-like conditions</p> Signup and view all the answers

<p>Chlorine</p> Signup and view all the answers

<p>Planets can support life based on the presence of liquid water</p> Signup and view all the answers

<p>To regulate temperature and prevent rapid water vaporization</p> Signup and view all the answers

<p>It allows for the gradual accumulation of mutations and the emergence of complex life forms</p> Signup and view all the answers

<p>It simulated early Earth-like conditions to demonstrate the formation of organic molecules from simpler ones</p> Signup and view all the answers

<p>It can increase the chance of genetic drift in a population.</p> Signup and view all the answers

<p>A population of fish is separated by a new dam.</p> Signup and view all the answers

<p>Genetic drift occurs randomly, while gene flow is a directed process.</p> Signup and view all the answers

<p>Mass extinction events are a type of extinction event, but are characterized by a much larger scale of loss.</p> Signup and view all the answers

<p>Providing evidence for the existence of extraterrestrial life.</p> Signup and view all the answers

<p>Humans are the most evolved species on Earth.</p> Signup and view all the answers

<p>Creationism and evolution are two competing explanations for the origin of life.</p> Signup and view all the answers

<p>It must be based on DNA or RNA.</p> Signup and view all the answers

<p>Scientists have some evidence that extraterrestrial life might exist, but more research is needed.</p> Signup and view all the answers

<p>Homologous structures have different functions but similar structures, while analogous structures have similar functions but different structures.</p> Signup and view all the answers

<p>All individuals have an equal chance of survival and reproduction.</p> Signup and view all the answers

<p>Species with a recent common ancestor have higher percentages of shared DNA sequences.</p> Signup and view all the answers

<p>The appendix of a human.</p> Signup and view all the answers

<p>Experimental manipulation of genes.</p> Signup and view all the answers

<p>Homologous structures develop from the same embryonic tissue, while analogous structures develop from different embryonic tissue.</p> Signup and view all the answers

<p>Evolution is a consequence of natural selection.</p> Signup and view all the answers

<p>Fossil records provide evidence for the existence of extinct species and reveal relationships between living species.</p> Signup and view all the answers

<p>The fittest individuals in a population are those that are best adapted to their environment and survive to reproduce.</p> Signup and view all the answers

<p>Gene flow between populations leads to adaptation to local environments.</p> Signup and view all the answers

<p>All of the above.</p> Signup and view all the answers

<p>The random changes in allele frequencies within a population due to chance events.</p> Signup and view all the answers

<p>All living organisms share a common ancestor, and their evolutionary relationships can be depicted as a branching tree.</p> Signup and view all the answers

<p>It examines the historical evolution of species and their geographical distribution.</p> Signup and view all the answers

<p>All of the above.</p> Signup and view all the answers

<p>All of the above.</p> Signup and view all the answers

<p>Evolutionary Biogeography focuses on present-day distribution, while Historical Biogeography explores past distributions.</p> Signup and view all the answers

<p>All of the above.</p> Signup and view all the answers

<p>To search for biosignatures in the atmosphere of exoplanets using a spectrograph</p> Signup and view all the answers

<p>What obligations will we have to extraterrestrial life?</p> Signup and view all the answers

<p>SETI@home</p> Signup and view all the answers

<p>To study exoplanets in more detail</p> Signup and view all the answers

<p>To search for biosignatures in the atmosphere of exoplanets</p> Signup and view all the answers

<p>Using radio telescopes to search for signals from other stars</p> Signup and view all the answers

<p>To send messages to other civilizations in the hope of making contact</p> Signup and view all the answers

<p>Signals that exhibit a Doppler shift</p> Signup and view all the answers

<p>Transit method</p> Signup and view all the answers

<p>All of the above.</p> Signup and view all the answers

<p>Any observable feature that indicates the presence of life, past or present</p> Signup and view all the answers

<p>All of the above.</p> Signup and view all the answers

<p>It is the frequency of a common interstellar molecule.</p> Signup and view all the answers

<p>It requires specialized hardware or software from volunteers.</p> Signup and view all the answers

<p>Gradient in positively charged protons serving as a 'battery' to fuel the creation of organic molecules and proto-cells</p> Signup and view all the answers

<p>It is the simplest occurring amino acid found in extraterrestrial materials</p> Signup and view all the answers

<p>To distribute life throughout the Universe</p> Signup and view all the answers

<p>It proposes that species change over time through natural selection</p> Signup and view all the answers

<p>One explains the origin of life on Earth, while the other proposes life exists throughout the Universe</p> Signup and view all the answers

<p>It is an example of a catastrophic event that affected the evolution of species</p> Signup and view all the answers

<p>To explain the origin of life on Earth</p> Signup and view all the answers

<p>Transit method</p> Signup and view all the answers

<p>All of the above</p> Signup and view all the answers

<p>SETI@home</p> Signup and view all the answers

<p>Transit method</p> Signup and view all the answers

<p>Presence of water vapor in an exoplanet's atmosphere</p> Signup and view all the answers

<p>All of the above</p> Signup and view all the answers

<p>Direct imaging</p> Signup and view all the answers

<p>The vast distances involved in interstellar communication.</p> Signup and view all the answers

<p>The signals are often overwhelmed by the noise from the star.</p> Signup and view all the answers

<p>The impact of discovering extraterrestrial life on human society and culture.</p> Signup and view all the answers

<p>Transit spectroscopy</p> Signup and view all the answers

<p>To detect extraterrestrial life through radio signals.</p> Signup and view all the answers

<p>Transit method</p> Signup and view all the answers

<p>The signals are often overwhelmed by the noise from the star.</p> Signup and view all the answers

<p>To understand the formation and evolution of planetary systems.</p> Signup and view all the answers

<p>They are less prone to atmospheric interference.</p> Signup and view all the answers

<p>Radio signals</p> Signup and view all the answers

<p>The difficulty in distinguishing between natural and artificial signals.</p> Signup and view all the answers