Biodegradation Quiz

What is biodegradation?

• The breakdown of substances by biological processes

• The creation of synthetic materials

• The burning of waste

• The recycling of plastics

Which microorganisms are primarily involved in biodegradation?

• Bacteria, fungi, and algae

• Insects and worms

• Plants and trees

• Viruses and protozoa

What is a biodegradable polymer?

• A polymer that can break down naturally

• A polymer that is made from metals

• A polymer that is always harmful

• A polymer that cannot be recycled

What is the first stage of biodegradation?

• Incineration

• Composting

• Assimilation

• Biofragmentation

What does composting produce?

• Gasoline

• Plastic

• Humus

• Toxic waste

Which plastic is safe for single-use only?

• Polyethylene Terephthalate (PET)

• High Density Polyethylene (HDPE)

• Polypropylene (PP)

• Low Density Polyethylene (LDPE)

What is the main problem with traditional synthetic polymers?

• They are biodegradable

• They are too light

• They are too expensive

• They do not break down easily

What is the role of enzymes in biodegradation?

• They make plastics stronger

• They create new plastics

• They help break down polymer chains

• They prevent degradation

What is the difference between biodegradable and compostable?

• Compostable needs specific conditions

• Compostable is made from metals

• Biodegradable cannot break down

• Biodegradable is always harmful

Which method is used to test anaerobic biodegradation?

• ASTM D6400

• ASTM D5511

• ASTM D13432

• ASTM D5526