Biology Chapter 5
Which statement does NOT describe one of the benefits of algae biofuels?
Algae biofuel production costs are low.
A young husband and wife have decided that they want to grow algae to produce biofuels. They successfully harvest oils, carbohydrates, and proteins from the algae they have grown; however, they are left with hundreds of pounds of algal cell walls. How can they use these cell walls to assure that nothing from their operation is wasted? Please choose the correct answer from the following choices, and then select the submit answer button. Answer choices
Algal cell walls can be burned for electricity and heat or used for organic fertilizer.
What is the difference between biofuels and alternative fuels?
Alternative fuels are any energy source other than petroleum, whereas biofuels come from living organisms.
Which statement is FALSE regarding photosynthesis?
Chlorophyll absorbs light in the middle of the visible spectrum.
Which principle is known as the conservation of energy?
Energy is neither created nor destroyed, but is converted from one form into another.
A farmer has decided to convert his overused, infertile land to grow algae for biofuel production. He successfully separates the harvested algae into its primary components and uses the oil to produce the desired biofuel. How can he use the separated proteins to assure that nothing from his operation is wasted? Please choose the correct answer from the following choices, and then select the submit answer button. Answer choices
He can feed the algal proteins to his livestock.
Which statement about the protons that release during the water-splitting reaction of photosynthesis is FALSE?
Hydrogen gas releases from the plant.
Which statement is FALSE regarding photosynthetic organisms?
Processed oils from plants, algae, and fossils comprise biofuels.
Which statement is false regarding the conservation of energy principle?
Synthesizing complex molecules for cellular structures constitutes potential energy.
A family has decided that they want to grow algae to produce biofuels. They successfully separate the harvested algae into its primary components so that the processed oil produces the desired biofuel. How can they use the separated carbohydrates to assure that nothing from their operation is wasted?
They can ferment the algal carbohydrates to form additional biofuels.
Which of these fuel sources requires the least amount of fertilizer to grow?
algae
Which fuel source is the most "green" or most environmentally friendly?
algae biofuel
Shivering (uncontrolled muscle contractions) warms a person up because shivering muscles:
are contracting more and releasing some energy as heat.
Once extracted, the oil that microalgae produce can be processed to make:
biodiesel fuel, gasoline, and jet fuel.
How does a plant convert sunlight to kinetic energy?
catabolism of glucose to power cellular functions
What type of energy does the enzyme Rubisco produce?
chemical
Animal movement requires a conversion of energy from: Please choose the correct answer from the following choices, and then select the submit answer button. Answer choices
chemical to kinetic energy.
The oil that microalgae produce is very similar to:
common vegetable oil
Which of these organisms contain photosynthetic capabilities?
cyanobacteria, algae, and plants
The conversion of inorganic carbon to organic carbon is called carbon:
fixation
Which fuel source requires the most time to replenish?
fossil fuels
Which fuel source has a low impact on land use?
fossil fuels and algae biofuels
Which combination is not correctly matched?
gasoline; kinetic energy
Which renewable fuel is least widely used in the United States?
geothermal
What molecule is NOT one of the products formed in the light reactions of photosynthesis?
glucose
Some new devices are being tested, which could maximize the growth of plants by optimizing photosynthesis. Which of these would be the MOST direct way to measure photosynthesis in these tests?
glucose production by the plant
Which end product is NOT associated with algae farming?
human food
What type of energy is required to maintain carbon dioxide levels in the algae bioreactors?
kinetic
What are the oils produced by algae?
lipids
Chloroplasts are found in the cells of:
photosynthetic organisms.
Which of these organisms can produce biofuels?
plants, algae, and microalgae
Which organism is a type of algae?
pond scum
An egg balanced at the peak of a slanted roof has _____ energy.
potential
Which of these products produce the least amount of greenhouse gas emissions?
rapeseed, canola
The color of an object that we see is the color that it:
reflects
Which of these is NOT a biofuel precursor?
river water
Which of these is NOT a method for growing algae?
sand farm
Which organism is a type of algae?
seaweed
What is NOT one of the ways algae biofuel production costs are being reduced?
small-scale production using natural ponds
Which description occurs during the "photo" reactions of photosynthesis?
sunlight is captured
One of the reasons photosynthetic organisms are so important on planet Earth is that:
the energy-rich molecules they produce are used by all living organisms to fuel cellular processes.
The ultimate source of energy for photosynthetic organisms is:
the sun
What is NOT one of the issues with America's fuel resources?
there are no alternatives to petroleum