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Q: Cyanobacteria have been engineered to produce isobutanol directly. What advantage does this have over other alternative biofuels? a. It is an inherently renewable fuel source. b. Multiple processing
steps can be avoided. c. They produce chemical energy through photosynthesis. d. They make a biofuel alternative to gasoline.
A: d. They make a biofuel alternative to gasoline While other alternatives to gasoline include deriving biofuels from plants or from algae, both of these processes require several intermediate steps before refinement into usable fuels. [ The research team says this new approach is potentially much more efficient and less expensive than the current approach as it avoids the need for biomass
deconstruction, which is a major economic barrier for biofuel production. Using the cyanobacterium Synechoccus elongatus, researchers first genetically increased the quantity of the carbon dioxide fixing enzyme RuBisCO. Then they spliced genes from other microorganisms to engineer a strain that intakes carbon dioxide and sunlight and produces isobutyraldehyde gas. The low boiling point and high vapor pressure of the gas allows it to easily be stripped from the system. ]
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User: Cyanobacteria have been engineered to produce isobutanol directly. What advantage does this have over other alternative biofuels? a. It is an inherently renewable fuel source. b. Multiple processing steps can be avoided. c. They produce chemical energy through photosynthesis. d. They make a biofuel alternative to gasoline.

Weegy: d. They make a biofuel alternative to gasoline While other alternatives to gasoline include deriving biofuels from plants or from algae, both of these processes require several intermediate steps before refinement into usable fuels. [ The research team says this new approach is potentially much more efficient and less expensive than the current approach as it avoids the need for biomass deconstruction, which is a major economic barrier for biofuel production. Using the cyanobacterium Synechoccus elongatus, researchers first genetically increased the quantity of the carbon dioxide fixing enzyme RuBisCO. Then they spliced genes from other microorganisms to engineer a strain that intakes carbon dioxide and sunlight and produces isobutyraldehyde gas. The low boiling point and high vapor pressure of the gas allows it to easily be stripped from the system. ]
cecillereign|Points 261|

User: The United States’ fossil fuel shortage of (blank) makes the country dependent on outside sources.

Weegy: An index fossil is used to date the age of the strata of rock in which it is found. For example, if you found a fossil of a particular dinosaur in a strata of rock, you can know about how old it is based on when the dinosaur was alive.
aaaaaaaaaaaaaaa|Points 3996|

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Asked 10/18/2013 8:43:06 AM
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