Here are 1000 MCQs on Marine Biotechnology (Chapterwise).
1. What is the primary focus of marine biotechnology?
a) Studying plant life in marine environments
b) Investigating marine animal behavior
c) Utilizing marine organisms for industrial and medical applications
d) Analyzing ocean currents and tides
View Answer
Explanation: Marine biotechnology involves the application of marine organisms for various purposes, including industrial processes and medical advancements.
2. Which property of seawater affects the sinking tendency of marine organisms?
a) Opacity
b) Turbidity
c) pH
d) Viscosity
View Answer
Explanation: The stickiness between the water molecules is called the viscosity. Viscosity of seawater is responsible for reducing the sinking tendency of marine organisms by increasing the frictional resistance and introducing frictional drag.
3. How can marine biotechnology contribute to environmental conservation?
a) Creating artificial marine habitats
b) Using marine organisms for pollution remediation
c) Developing genetically modified marine organisms
d) Introducing non-native species for biodiversity enhancement
View Answer
Explanation: Marine biotechnology can harness the natural capabilities of marine organisms to remediate pollution and environmental damage.
4. Which bioactive metabolites can be isolated from sea cucumbers (Holothuroidea)?
a) Acrydine
b) Quinone
c) Saponin
d) Saffranin
View Answer
Explanation: Several species of sea cucumbers (Holothuroidea) are eaten in different parts of the world. A large number of saponins have been isolated from the Cuvier gland of sea cucumbers in the Bahamas.
5. What is the significance of marine biotechnology in aquaculture?
a) Developing sustainable fish farming practices
b) Recreational fishing
c) Enhancing marine biodiversity
d) Improving water quality
View Answer
Explanation: Marine biotechnology contributes to developing sustainable aquaculture practices for efficient and environmentally friendly fish farming.
6. Which of the following is not a class of bioactive metabolite from marine algae?
a) Nitrogen heterocyclics
b) Brominated phenols
c) Oxygen heterocyclics
d) Prostaglandins
View Answer
Explanation: Secondary metabolites from the marine algae serve as bioactive molecules of importance. These metabolites are synthesized for non-growth related purposes. Prostaglandins are bioactive molecules from higher marine organisms whereas all other options are from marine algae.
7. What is the most common type of aquaculture practiced in India?
a) Traditional
b) Semi-intensive
c) Monoculture
d) Mariculture
View Answer
Explanation: In semi-intensive aquaculture there are minimum influence of tidal influences on the harvest and culturing. Semi-intensive is commonly practiced in India and coastal areas.
8. Which of the following is a marine cyanobacterium?
a) Synechococcus
b) Thiobacillus
c) Pseudomonas
d) Laurencia glandulifera
View Answer
Explanation: Synechococcus and Prochlorococcus are members of the cyanobacteria that are large contributors to primary production and phytoplankton biomass. Cells in these groups are smaller than those of eukaryotic phytoplankton.
9. In marine biotechnology, what role do extremophiles play?
a) Keystone species in marine ecosystems
b) Migratory marine species
c) Indicators of marine pollution
d) Adapted to extreme environmental conditions
View Answer
Explanation: Extremophiles in marine biotechnology are organisms adapted to extreme conditions, such as high pressure, low temperature, and high salinity, with potential applications in various industries.
10. Which of the following is used for concentration of aqueous extracts of marine bioactive compounds?
a) Vacuum separation
b) Freeze-drying
c) Boiling
d) Crystallization
View Answer
Explanation: For concentration the aqueous extracts of marine bioactive compounds, freeze drying is used instead of evaporation (as in case of non-polar compounds). This is because sea water has high heat of vaporization and prolonged evaporation can lead to destruction of the activity of compounds.
11. Which of the following is sourced from the marine fungus Cephalosporium acremonium?
a) Alginic acid
b) Kainic acid
c) Cephalosporin
d) Saxitoxin
View Answer
Explanation: Cephalosporium acremonium is a marine fungus that produces cephalosporin C, active against Gram-negative bacteria. Cephalosporin C is a penicillinase-sensitive antibiotic also termed antibiotic N.
12. Which bioactive compound from marine organisms are purine derivatives?
a) Cytokinin
b) Toxins
c) Alkaloids
d) Phycocyanins
View Answer
Explanation: Cytokinins isolated from marine organisms are purine derivatives. Cytokinins play a major role in cell division and differentiation in plants. Ion-exchange chromatography followed by preparative TLC on silica is used in the isolation process.
13. What is the primary source of energy for most marine organisms involved in marine biotechnology?
a) Geothermal energy
b) Solar energy
c) Wind energy
d) Chemical energy from organic compounds
View Answer
Explanation: Solar energy is the primary source of energy for marine organisms, supporting photosynthesis and the marine food web.
Chapterwise Multiple Choice Questions on Marine Biotechnology
- Bioactive Metabolites of Marine Algae, Fungi, Bacteria and Invertebrates
- Separation and Isolation Techniques
- Marine Prostaglandins & Ocean as a Habitat
- Phytoplankton & Marine Plants
- Microbial Heterotrophs and Invertebrates
- Marine Vertebrates
- Model Organisms
- Fish Genetics and Biotechnology
- Aquaculture Management
- Environmental Ocean Technology
- Science of Aquaculture
- Marine Bioprospecting
- Marine Microbial Environment
- Products and Services of the Ocean
- Sustainable Aquaculture
- Aquaculture Medicine & Aquaculture in India
- Soil Microbiology
- Environmental Effects of Aquaculture
- Disease Management in Aquaculture Production Systems
1. Bioactive Metabolites of Marine Algae, Fungi, Bacteria and Invertebrates
The section contains Marine Biotechnology multiple choice questions and answers on bioactive metabolites of marine algae, fungi, bacteria and marine invertebrates.
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2. MCQ on Separation and Isolation Techniques
The section contains questions and answers on marine toxins and isolation of marine natural products.
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3. Marine Prostaglandins & Ocean Habitat
The section contains MCQs on marine prostaglandins and ocean habitat.
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4. Marine Biotechnology MCQ on Phytoplankton & Marine Plants
The section contains multiple choice questions and answers on phytoplankton and marine plants.
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5. Microbial Heterotrophs and Invertebrates
The section contains Marine Biotechnology questions and answers on marine algal biotechnology, microbial heterotrophs and invertebrates.
6. Marine Vertebrates
The section contains MCQs on marine vertebrates like aquaculture and mariculture.
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7. Marine Biotechnology Questions on Model Organisms
The section contains multiple choice questions and answers on biomedical research on fish models and fish experiments in space.
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8. Fish Genetics and Biotechnology
The section contains questions and answers on marine organisms transgenic technology and broodstock development.
9. Marine Biotechnology MCQs on Aquaculture Management
The section contains MCQs on aquaculture Management and aquaculture bioremediation.
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10. Environmental Ocean Technology
The section contains Marine Biotechnology multiple choice questions and answers on environmental Oocean technology, coastal hazards mitigation, microfluidics in marine biotechnology, marine flora and fauna.
11. Science of Aquaculture
The section contains questions and answers on recirculating aquaculture system and aquaculture functional feeds.
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12. MCQ on Marine Bioprospecting
The section contains Marine Biotechnology MCQs on mussel adhesive proteins and marine silicon biotechnology.
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13. Marine Microbial Environment
The section contains multiple choice questions and answers on microalgal biotechnology, marine actinobacterial metabolites and marine biosurfactants.
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14. Products and Services of the Ocean
The section contains Marine questions and answers on seafood nutraceuticals.
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15. Marine Biotechnology Multiple Choice Questions on Sustainable Aquaculture
The section contains MCQs on integrated multi-trophic aquaculture and sustainable marine food production systems.
16. Aquaculture Medicine & Aquaculture in India
The section contains multiple choice questions and answers on aquaculture probiotics and shrimp aquaculture.
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17. Marine Biotechnology Questions on Soil Microbiology
The section contains questions and answers on soil microbiology and soil water interactions in aquatic systems.
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18. Environmental Effects of Aquaculture
The section contains Marine MCQs on aquaculture environmental effects and wastewater management through aquaculture.
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19. Disease Management in Aquaculture Production Systems
The section contains MCQs on biotechnological interventions on fish health.
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Wish you the best in your endeavor to learn and master Marine Biotechnology!
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