Chapter 7 Online quizzes

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Microalgae is unlikely to be adopted as a source of renewable energy because:

Microalgae are unable to synthesise the fatty acids which could be used as biofuels correct incorrect

Microalgae are unable to transform carbon dioxide and water into glucose correct incorrect

Microalgae cannot synthesise fatty acids at a rate which would meet human energy demands correct incorrect

Microalgae only produce fatty acids when nitrogen is abundant correct incorrect

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The research team led by Daniel Nocera achieved a great leap forward with artificial photosynthesis because:

Ralstonia eutropha bacteria eliminated the need for an inorganic catalyst correct incorrect

Ralstonia eutropha produce polymers that can be used as fuels correct incorrect

Ralstonia eutropha reduces the energy required to split water via electrolysis correct incorrect

Ralstonia eutropha can reduce hydrogen ions correct incorrect

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Biogas reactors, such as the one designed by Brian Harper to fuel a street lamp, employ bacteria to:

Combine oxygen and methane to release energy correct incorrect

Oxidise faeces to produce methane correct incorrect

Metabolise methane to produce carbon dioxide correct incorrect

Metabolise faeces to produce methane correct incorrect

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Which of the following methods could not have a role in the production of bioethanol from sugar crops?<

Employing yeast to ferment glucose to produce ethanol correct incorrect

Softening fibrose materials with enzymes extracted from pandas correct incorrect

Breeding plants to produce less lignin correct incorrect

Genetically modifying plants to degrade their own cell walls with bacterial enzymes correct incorrect

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What is the role of yeast in the production of artificial milk outlined on p.153 to 155?

Combining carbon dioxide and water to produce sugars correct incorrect

Combining ions to produce salts correct incorrect

Combining amino acids to produce proteins correct incorrect

Combining fatty acids to produce triacylglycerides correct incorrect

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People who have lactose intolerance...

Lack the gene to produce lactose correct incorrect

Lack the gene to produce lactase correct incorrect

Lack the ability to express the gene to produce lactose correct incorrect

Lack the ability to express the gene to produce lactase correct incorrect

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Researcher Mark Post believes the ideal form of artificial meat will contain:

Striated muscle cells and adipose cells correct incorrect

Adipose cells and smooth muscle cells correct incorrect

Striated muscle cells correct incorrect

Striated and smooth muscle cells correct incorrect

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Muscle tissue with a thickness greater than one cell is hard to culture in the laboratory because:

Cultured tissues have a vascular network correct incorrect

The outer cells absorb insufficient oxygen correct incorrect

The inner cells absorb excess nutrients correct incorrect

The inner cells absorb insufficient nutrients and oxygen correct incorrect

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Which of the following processes is not a potential role for algae?

The production of seaweed correct incorrect

To counteract rising levels of carbon dioxide correct incorrect

The production of fishmeal correct incorrect

The production of foodstuffs for human consumption correct incorrect

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Genetically modifying algae could be dangerous if:

Microalgae is cultured in bioreactors correct incorrect

Microalgae is modified to produce toxins to combat predators in the wild correct incorrect

Microalgae is used to produce fatty acids for human consumption correct incorrect

Algae are exposed to high levels of nitrogen correct incorrect