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The visits of the first robotic missions to the icy moons radically changed scientists' conceptions of the suitability of these worlds to host life. Which of the following statements about this change in perception is true? Select each true statement (there may be several).
A) Detection of radioactivity confirmed that radioactive decays were providing significant heat to some of the moons.
B) A key sign of youth for the surface of some of the moons was provided by their heavily cratered surfaces.
C) Images from the first robotic missions showed surprisingly young surfaces on some of the moons.
D) If the moons were experiencing significant heating, then they might have liquid water.
E) Prior to the first robotic missions, the moons (except Titan) were presumed to be dead, frozen worlds.
F) Careful analysis of the moons' masses and orbits confirmed that strong tidal forces were providing significant heat to some of the moons.
The drug Nifedipine is identify in this chapter as a membrane calcium ion channel blocker, and it is used to relax the walls of blood vessels.
Explain anaerobic respiration in terms of an electron transport chain, proton motive force, electron donors and acceptors.
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I in brief describe how a mutation might alter gene function (at the molecular level) if it fell into the following categories. As an example, a neomorphic mutation could result from expressing a gene in a novel location.
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The overall reaction of aerobic respiration of glucose is summarized as.
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After some week's plants that were transplanted into nonsterile soil exhibited a much higher growth rate compared to the plants transplanted into sterile soil. What would be the most likely explanation for this result.
The following 3-recessive genes are found in corn. Brittle endosperm, glossy leaf, and ragged seedling. A tri-hybrid is test-crossed producing the following offspring.
What two groups of organisms live symbiotically to form lichens? Of what benefit are mycorrhizal fungi to plants? How does this symbiotic relationship benefit the fungus.
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