Exploring the Plastic-Eating Super-Enzyme Breakthrough

The video discusses the problem of single-use plastic waste, focusing on polyethylene terephthalate (PET) used in bottles. Traditional recycling methods are inefficient, leading scientists to explore enzymatic solutions. A 'super enzyme' combining PETase and MHETase has been engineered to break down PET more efficiently. However, commercial viability is still a challenge. The video emphasizes the need for improved recycling habits and highlights the role of human action in addressing plastic waste.

What is the main problem with single-use plastic bottles?

• They are not used by many people.

• They are too expensive to produce.

• They are difficult to manufacture.

• They take a long time to decompose.

What is PET plastic commonly used for?

• Packaging food

• Making toys

• Building materials

• Carbonated beverage bottles

Why is it cheaper to use new PET instead of recycled PET?

• Recycled PET is easier to produce.

• Recycled PET is less appealing and less durable.

• Recycled PET is more colorful.

• Recycled PET is more durable.

Where were the bacteria that decompose PET the fastest discovered?

• In the ocean

• In a waste site in Japan

• In a laboratory in the USA

• In a forest

What is the name of the enzyme that breaks down PET?

• PETase

• Protease

• Lipase

• Amylase

What additional enzyme does the Japanese bacterium use to further break down PET?

• Protease

• Lipase

• MHETase

• Amylase

What are the building blocks of PET?

• Glucose and fructose

• Terephthalic acid and ethylene glycol

• Fatty acids and glycerol

• Amino acids and peptides

Why can't bacteria produce the combined super enzyme themselves?

• Bacteria do not produce enzymes.

• The super enzyme is too small for their machinery.

• The super enzyme is too large for their machinery.

• The super enzyme is toxic to bacteria.

What is a major challenge in making the super enzyme commercially viable?

• It is not fast enough yet.

• It is too toxic.

• It is too small.

• It is too expensive to produce.

What percentage of bottles used in the US are recycled?

• Less than 10%

• Less than 20%

• Less than 40%

• Less than 30%