How Algae Solar Panel Works?
7 medium multiple-choice questions linking facts and reasoning from the video about algae-based bio-photovoltaics and bio-hydrogen systems.
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Quiz Questions & Answers
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Question 1: What cellular process in algae creates free electrons that bio-photovoltaic devices can collect?
Respiration
Photosynthesis
Fermentation
Nitrogen fixation
Question 2: In the Amrita University bio-photovoltaic device, how did researchers physically collect the algae-generated charge?
By dissolving algae and using the solution
By sandwiching algae between coated electrodes
By freezing algae and extracting ions
By heating algae to release electrons
Question 3: Compared to commercial inorganic solar cells, where did the Amrita algae device show strongest relative performance?
Open-circuit voltage
Photocurrent density
Lifespan
Manufacturing cost
Question 4: Which practical hurdle did researchers highlight as a major challenge for scaling algae BPV cells?
Algae cannot live in natural ponds
Insufficient electrode materials
Lack of sunlight in labs
Need for a liquid reservoir and cell maintenance
Question 5: Why did contaminated Chlamydomonas cultures with bacteria produce much more hydrogen in the Córdoba study?
Bacteria cooled the cultures under light
Bacteria increased light absorption
Bacteria directly converted algae into hydrogen
Bacteria consumed oxygen and provided nutrients, enabling sustained hydrogen production
Question 6: Which outcome from the Córdoba co-culture experiment suggests good potential for real-world applications?
It removed all contaminants from wastewater instantly
It eliminated the need for water
Hydrogen production was robust across light intensities and temperatures
It produced industrial-scale volumes immediately
Question 7: Which research direction did the video propose as a promising way to improve algae-based energy systems?
Finding or engineering better algae–bacteria combos and mutant strains
Relying only on single-species monocultures
Removing light entirely from the process
Switching to fossil fuel supplements