Biotechnology in Environmental Protection

The video discusses the application of biotechnology in various fields, focusing on environmental protection. It covers bioremediation, biomass energy production, biosensors, genetically modified bacteria, biofertilizers, and sewage treatment. Each section explains how biotechnology can solve environmental issues, enhance energy production, and improve agricultural practices.

What is the primary focus of biotechnology in environmental protection?

• Developing new medicines

• Enhancing agricultural yield

• Improving environmental protection

• Creating new industrial products

What is bioremediation?

• The use of chemicals to clean soil

• The use of plants to absorb pollutants

• The use of microorganisms to remove contaminants

• The use of machines to filter air

How is biogas produced?

• Through aerobic respiration

• By burning fossil fuels

• By chemical synthesis in factories

• Through anaerobic respiration of agricultural waste

What is the role of biosensors in environmental protection?

• To increase crop production

• To synthesize new chemicals

• To generate renewable energy

• To detect and measure environmental pollutants

Which organisms are used as bio-indicators for air quality?

• Earthworms

• Lichens

• Bacteria

• Fungi

What is the first step in the sewage treatment process?

• Final disposal

• Preliminary treatment

• Tertiary treatment

• Secondary treatment

What is the main purpose of the secondary treatment in sewage processing?

• To filter out debris

• To add chemicals for disinfection

• To oxidize organic materials

• To remove heavy metals

What is the final product called after sewage treatment?

• Compost

• Effluent

• Sludge

• Biogas

Which bacteria are known for nitrogen fixation in biofertilizers?

• Pseudomonas

• Rhizobium

• Staphylococcus

• E. coli

What is the main environmental benefit of using biofertilizers?

• They increase soil toxicity

• They reduce the need for chemical fertilizers

• They enhance water pollution

• They promote the growth of weeds