Ethanol is an example of _____________________.
a. an ester
b. an alcohol
c. gasoline
d. diesel fuel |
Answer: b |
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What causes energy to be released from molecules of food to furnish energy for metabolism and growth of microorganisms.
a. photosynthesis
b. aerobics
c. fermentation
d. anaerobics |
Answer: c |
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What is one of the main gases that is causing global warming or the greenhouse effect?
a. oxygen
b. nitrogen
c. carbon
d. carbon dioxide |
Answer: d |
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What is the process in the manufacture of ethanol that involves heating a substance and then condensing the vapor or gas that is created to purify or concentrate it?
a. condensation
b. distillation
c. respiration
d. oxidation |
Answer: b |
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What renewable resources are used to create biofuels?
a. corn, soybeans, sugar cane, animal waste, plant waste, wood, and algae
b. petroleum and coal
c. methane and ethylene
d. soil, water, and air |
Answer: a |
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Carbon is found in the biotic and abiotic reservoirs called ____________________________.
a. wells
b. biofuels
c. sinks d. the atmosphere |
Answer: c |
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What is biomass?
a. any organic plant and animal matter that can be used to produce energy
b. resources such as fossil fuels are those that cannot be reused
c. a colorless, heavy, and odorless gas found in the atmosphere
d. volatile organic compounds and toxic air emissions |
Answer: a |
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What is an important by-product of fermentation?
a. glucose
b. pyruvic acid
c. yeast d. alchohol |
Answer: d |
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Fermentation that occurs in the presence of air is said to be ____________________________
a. glycolic
b. aerobic
c. anaerobic d. alcoholic |
Answer: b |
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