This set of Marine Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Marine Actinobacterial Metabolites”.
1. Actinobacteria have __________________
a) starch content
b) high GC content
c) gram negative character
d) distinct cell wall
View Answer
Explanation: Actinobacteria are abundant group of microbes in terrestrial as well as marine environments. They have high GC content in the DNA, lack a distinct cell wall, and produce wide variety of secondary metabolites.
2. Salinibacterium can tolerate ___________________
a) high salinity
b) low pH
c) high temperature
d) hydrogen sulfide
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Explanation: Salinibacterium is a recently discovered genus of actinobacteria that can tolerate high amounts of salinity in its environment (up to 10% NaCl). High salinity although, is not a requirement for growth.
3. Bisanthraquinone is an antibiotic.
a) True
b) False
View Answer
Explanation: Bisanthraquinone is a newly discovered antibiotic from Streptomyces species. The potential of this antibiotic is being clinically tested against vancomycin-resistant Enterococcus faecium.
4. Salinosporamides are potent _____________________ agents.
a) anti-bacterial
b) anti-malarial
c) anthelmintic
d) anticancer
View Answer
Explanation: Salinosporamides are a type of secondary metabolites of actinobacterial origin. These biomolecules produced by such genera as Salinobacteium and Verrucosispora are in clinical trials as potent anticancer agents.
5. Which activity is not exhibited by Chandrananimycin A?
a) Antibacterial
b) Antifungal
c) Antialgal
d) Anthelmintic
View Answer
Explanation: Chandrananimycin A is a novel antibiotic from actinobacterial species Chandrananimycin. It possess antifungal activity (against Mucor miehei), antialgal activity (against Chlorella vulgaris), and anticancer activity as well.
6. __________________ compound has been obtained from a shallow-water sediment sample collected at Hawaii.
a) Bonactin
b) Himalomycin
c) Abyssomicin
d) Diazepinomicin
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Explanation: Bonactin has been isolated from a shallow-water sediment sample of Streptomyces species. It has displayed prolific antibacterial activity against both gram-positive and gram-negative bacteria.
7. Abyssomicin C shows antibacterial activity against drug-resistant bacteria.
a) True
b) False
View Answer
Explanation: Abyssomicin C is a polycyclic polyketide antibiotic produced by marine Verrucocosispora. It is a potent inhibitor of multiple-resistant and vancomycin-resistant bacteria Staphylococcus aureus.
Sanfoundry Global Education & Learning Series – Marine Biotechnology.
To practice all areas of Marine Biotechnology, here is complete set of 1000+ Multiple Choice Questions and Answers.
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