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Biodegradation Quiz

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Questions and Answers

What is the main purpose of biodegradation?

To break down organic substances into smaller compounds for reuse by other organisms (correct)

To eliminate all organic waste from the environment

To produce toxic end products harmful to the environment

To convert waste materials into non-biodegradable forms

What is the outcome of biodegradation?

Fossilization

Vitrification

Petrification

Mineralization (correct)

What distinguishes composting from biodegradation?

Composting is a faster process than biodegradation

Composting produces toxic end products, while biodegradation does not

Composting involves inorganic waste breakdown, while biodegradation involves organic waste breakdown

Composting is a controlled process of organic waste breakdown, while biodegradation is a natural process (correct)

What is the requirement for a product to be considered compostable?

It needs to biodegrade within 180 days in a composting system and leave no toxicity in the soil Signup and view all the answers

How is biodegradation related to environmental remediation?

Biodegradation is mostly associated with environmental remediation, known as bioremediation Signup and view all the answers

What are the two types of enzymes involved in the biodegradation process?

Extracellular depolymerases and intracellular depolymerases Signup and view all the answers

What is the process called when the end products of depolymerization are carbon dioxide, water, or methane?

Mineralization Signup and view all the answers

In which type of metabolism do microbes use O2 to degrade contaminants?

Aerobic metabolism Signup and view all the answers

What is the outcome of the growth process in biodegradation?

Complete degradation (mineralization) of organic pollutants Signup and view all the answers

What is the main requirement for organic materials to be degraded aerobically?

Presence of oxygen Signup and view all the answers