This set of Environmental Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Organic Pollutants – Degradative Capacities of Fungi”.
1. Fungi has the capability of ___________
a) water
b) oxygen
c) carbon
d) potassium
View Answer
Explanation: Molecular oxygen that is found in the environment helps to degrade plant and animal biomass into carbon dioxide and water and not into Oxygen, Carbon and Potassium.
2. Recalcitrant polymers can be recycled by which of the following microorganism?
a) Fungi
b) Enzymes
c) Reptiles
d) Potassium
View Answer
Explanation: Fungi has the degradative capabilities to recycle recalcitrant polymers like lignin, Enzymes, Potassium and Reptiles are not considered as microorganisms the recalcitrant polymers are supposed to be recycled by microorganisms more efficiently due to less cellular complexity.
3. Fungi can help in the elimination of hazardous wastes from the ecosystem.
a) True
b) False
View Answer
Explanation: Fungi has the degradative capabilities which can help degradation of more hazardous pollutants and persistent pollutants from the environment and hence, in the elimination of hazardous wastes from the ecosystem.
4. Which of the following are the inactive polymers?
a) Lignin
b) Liquid crystalline
c) Natural gas
d) Semi crystalline
View Answer
Explanation: Lignin is a heterogeneous and optically inactive polymer, whereas, Liquid crystalline and Semi crystalline are optically active polymer and can activate in response to heat, light, electrical field etc., natural gas is not a polymer.
5. Which of the following serve as a growth substrate for co-metabolic process?
a) Sugars by hydrolases
b) Sugars by oxidases
c) Sugars by carboxylase
d) Sugars by methane
View Answer
Explanation: Sugars released by hydrolases from hemicellulose serve as a growth substrate for co-metabolic process, whereas, Sugars by oxidases, sugars by carboxylase, sugars by methane are not used for co- metabolic process.
6. Lignin degradation doesn’t provide a primary carbon and energy for ___________
a) maintenance metabolism
b) mashing with Adhesives
c) mashing with Fibers
d) fungal growth
View Answer
Explanation: Lignin degradation doesn’t provide a primary carbon and energy for fungal growth and hence, is a co-metabolic process, whereas, the conserved energy in the phosphanhydride bond of ATP is partially used for cell multiplication and maintenance metabolism during oxidative phosphorylation by proliferating bacteria, mashing with Adhesives or fibers is not used in Lignin degradation.
7. Which of the following biocatalyst in lignin degradation is responsible of unspecific attacks?
a) Peroxidases
b) Manganese Peroxidases
c) Laccase
d) Methane
View Answer
Explanation: Peroxidases and Laccase are a group of biocatalyst that is used in the lignin degradation are the key biocatalyst and are responsible of unspecific attacks lignin.
8. Lignin degradation is done by the synergistic effect of oxidoreductases.
a) True
b) False
View Answer
Explanation: Ligninolytic enzymes are a ubiquitous group of enzymes found in plants, bacteria, insects, and fungi. These are extracellular glycoproteins composed of a monomeric protein along with a sugar component. Lignin degradation is done by the synergistic actions of oxidoreductases like ligninolytic enzymes.
9. Which of the following molecule is used by laccase group of biocatalysts to function properly?
a) Molecular oxygen
b) Manganese
c) Carbon dioxide
d) Methane
View Answer
Explanation: Molecular oxygen is the molecule which is used by laccase group of biocatalysts to function properly as they are a group of copper containing blue oxidase and not Manganese, Carbon dioxide and Methane.
10. Which of the following organism is based on highly reactive free radical de-polymerization?
a) Basidiomycetes
b) Bacteria
c) Pathogen
d) Protozoa
View Answer
Explanation: Basidiomycetes group of fungi having unique lignolytic enzyme system based on highly reactive free radical de-polymerization which is ideal for biodegradation of organopollutants.
11. Basidiomycetes are ideal for biodegradation of organopollutants.
a) True
b) False
View Answer
Explanation: Basidiomycetes are ideal for biodegradation of organopollutants in the environment because of their unique lignolytic enzyme system which is based on highly reactive free radical de-polymerization system.
Sanfoundry Global Education & Learning Series – Environmental Biotechnology.
To practice all areas of Environmental Biotechnology, here is complete set of 1000+ Multiple Choice Questions and Answers.
If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]
- Apply for Biotechnology Internship
- Check Environmental Biotechnology Books
- Practice Biotechnology MCQs
- Check Biotechnology Books
