When Considering Which Biofuel Is The Most Sustainable, Which Of These Must Be Considered?

When Considering Which Biofuel Is The Most Sustainable Which Of These Must Be Considered??

125 Cards in this Set
Which of the following are photosynthetic organisms? a. algae b. cyanobacteria c. plants d. a and c e. a b and c E- algae cyanobacteria and plants
When considering which biofuel is the most sustainable which of the following must be considered? water use energy use fertilizer and pesticide use

Why are algae considered more valuable for biofuel than plants such as corn?

Why are algae considered more valuable for biofuel than plants (such as corn)? Many types of algae can divert the sugars they make by photosynthesis into lipids that can be used to make biodiesel. … In biofuel-producing algae the energy of sunlight is converted to lipids. These store a large amount of energy per gram.

Which of the following is are necessary for biofuel production by algae?

What things to algae need to produce this oil that is high in chemical energy? sunlight carbon dioxide water plus a few nutrients.

What would happen to humans and other animals of algae cyanobacteria and plants were wiped out?

What would happen if algae cyanobacteria and plants were wiped out? Heterotrophs would not be able to use autotrophs as an energy source. Imagine that you have discovered a new species that has the ability to consume other organisms for energy and also contains chloroplasts.

How do the environmental costs of growing algae for biofuel production compare to other crop options?

How do the environmental costs of growing algae for biofuel production compare to other crop options? Algae require less fertilizer than corn. When considering which biofuel is the most sustainable which of these must be considered? The fuel used to run our cars contains _____ energy.

Why do biological engineers want to use algae for biofuels?

A significant advantage of using algae for biofuels is that it need not displace farmland used for growing food sources. The Department of Energy reports that algae have the potential to yield at least 30 times more energy than land-based crops currently used to produce biofuels.

Which of the following are required by a plant or an algae to carry out photosynthesis?

This process is called photosynthesis and is performed by all plants algae and even some microorganisms. To perform photosynthesis plants need three things: carbon dioxide water and sunlight. for photosynthesis. Carbon dioxide enters through tiny holes in a plant’s leaves flowers branches stems and roots.

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Is algae biofuel sustainable?

Biofuel has long been seen as a potential replacement for petrol. Oils from land plants and algae can be processed to create a range of combustible fuels including biodiesel. … Attempts to create fuel from algae so far however have not been as environmentally sustainable as hoped.

How biofuel is produced from algae?

Some algal species can produce hydrogen gas under specialized growth conditions. The biomass from algae can also be burned similar to wood or anaerobically digested to produce methane biogas to generate heat and electricity. Algal biomass can also be treated by pyrolysis to generate crude bio-oil.

Is algae biofuel environmentally friendly?

Our research has found that the production of algal biofuels is neither commercially nor environmentally sustainable. … In fact the rate of production from algae growing in the vast ponds required for truly massive production is for a given area of land similar to that seen in the most productive areas of the ocean.

What would happen to humans and other animals if algae cyanobacteria and plants were wiped out would we only lose a food source or would there be other repercussions?

Would we only lose a food source (e.g. plants) or would there be other repercussions? There would be several repercussions for humans if photosynthetic organisms were wiped out. … If these organisms are not able to “harvest” the energy in sunlight they will not be able to grow and store valuable molecules.

Where does the algae initially receive energy from?

3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants algae and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.

What impact does algae have on the amount of CO2 in the atmosphere quizlet?

Algae would use CO2 in photosynthesis reducing atmospheric CO2 which would otherwise trap heat in the atmosphere.

Are biofuels more sustainable than fossil fuels?

Biofuels are much better than fossil fuels but they are not environmentally-friendly. The best that we can do is try to cut down our fuel consumption by using less electricity and travelling on public transport or by bike more often.

What is the major hurdle for sustainable biofuels?

A major hurdle to commercialization of biofuels is their cost in comparison to petroleum-based fuels. Lower energy density and the price of raw materials make biofuels more expensive when producing heat. … EROI measures the processes of producing distributing and consuming an energy source.

How does biofuel affect the environment?

Regarding non-GHG environmental impacts research suggests that production of biofuel feedstocks particularly food crops like corn and soy could increase water pollution from nutrients pesticides and sediment (NRC 2011). Increases in irrigation and ethanol refining could deplete aquifers (NRC 2011).

Why do biological engineers want to know about the algae cell wall?

Engineers need to open the cell walls to get to the starch and oil. The cell walls can also be used for making biofuel.

What type of algae is used for biofuel?

green algae
The algae used in biodiesel production are usually aquatic unicellular green algae (Chlorophyceae). This type of algae is a photosynthetic eukaryote characterized by high growth rates and high population densities. Under good conditions green algae can double its biomass in less than 24 hours.Feb 19 2019

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Which of these are needed for algae to have photosynthetic capabilities?

125 Cards in this Set
Which of the following are photosynthetic organisms? a. algae b. cyanobacteria c. plants d. a and c e. a b and c E- algae cyanobacteria and plants
needed for algae to have photosynthetic capabilities? sunlight carbon dioxide and water

What kind of energy is necessary to initiate the process of photosynthesis?

Absorption of Light. Light energy initiates the process of photosynthesis when pigments absorb the light.

Which organelle do algae need in order to conduct photosynthesis?

Chloroplast Chloroplasts

Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis.

What are algae Where and when are they commonly seen?

They are mostly found on rivers and sometimes on seas too. It is commonly seen when the amount of phosphorous controls the amount of algae found in water bodies.

How is liquid biofuel made?

Biodiesel is a liquid fuel produced from renewable sources such as new and used vegetable oils and animal fats and is a cleaner-burning replacement for petroleum-based diesel fuel. Biodiesel is nontoxic and biodegradable and is produced by combining alcohol with vegetable oil animal fat or recycled cooking grease.

What fungus is being studied as a potential source of biofuels?

The filamentous fungal endophyte Ascocoryne sarcoides was shown to produce potential-biofuel metabolites when grown on a cellulose-based medium however the genetic pathways needed for this production are unknown and the lack of genetic tools makes traditional reverse genetics difficult.

How is biofuel harvested?

Making a Biofuel

Harvested plant matter is processed into liquid biofuel. … The alcohol is filtered from the mash and the remaining plant matter is used for livestock feed. With the final addition of heat the alcohol is processed into ethanol which can be used as a biofuel.

What types of biofuels are there?

Various Types of Biofuel
  • Wood. This is the most basic form of fuel that is derived from organic matter. …
  • Biogas. This is the gaseous form of biofuels. …
  • Biodiesel. This biofuel is liquid in nature. …
  • Ethanol. …
  • Methanol. …
  • Butanol.

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Are a potentially good renewable source of biofuels?

Biodiesel has drawn the attention of many researchers as a renewable energy resource because of its immense potential to be part of a sustainable energy mix in the near future. … Biodiesel is produced from edible and non-edible vegetable oils waste cooking oils and animal fats [12] [13] [14].

Which of these organisms can produce biofuels?

Heterotrophic microorganisms such as yeast and bacteria can utilize carbohydrates from lignocellulosic biomass directly or after pretreatment and enzymatic hydrolysis to produce liquid biofuels such as ethanol and butanol.

Why are algae considered more valuable for biofuel than plants such as corn )? Quizlet?

Why are algae considered more valuable for biofuel than plants (such as corn)? Many types of algae can divert the sugars they make by photosynthesis into lipids that can be used to make biodiesel. … In biofuel-producing algae the energy of sunlight is converted to lipids. These store a large amount of energy per gram.

How did cyanobacteria oxygen and ozone impact the evolution of eukaryotic cells quizlet?

How did cyanobacteria oxygen and ozone impact the evolution of eukaryotic cells? … Eventually once the oxygen reached the atmosphere and UV converted it to ozone this provided a shield from the radiation on the surface on the land and this allowed life to cross onto land in the darwinian model.

How do protists obtain energy and interact with their ecosystems?

Coral polyps obtain nutrition through a symbiotic relationship with dinoflagellates. Protists are essential sources of nutrition for many other organisms. In some cases as in plankton protists are consumed directly. Alternatively photosynthetic protists serve as producers of nutrition for other organisms.

Which of the following is are necessary for biofuel production by algae?

What things to algae need to produce this oil that is high in chemical energy? sunlight carbon dioxide water plus a few nutrients.

How does green algae obtain energy?

Algae absorb sunlight by photosynthesis and convert solar energy into chemical energy which they use in growth or to store within the cell. … Large algae plants produce thousands of cells in each frond and on the frond surface.

Why is algae a good biofuel?

Advantages for Biofuels

A significant advantage of using algae for biofuels is that it need not displace farmland used for growing food sources. The Department of Energy reports that algae have the potential to yield at least 30 times more energy than land-based crops currently used to produce biofuels.

The Problem with Biofuels

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What are Biofuels and Where are They Going?

Why renewables can’t save the planet | Michael Shellenberger | TEDxDanubia

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