This set of Marine Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Model Organisms”.
1. Common name of the fish Oryzias latipes is ___________
a) medaka
b) zebrafish
c) rohu
d) chinook
View Answer
Explanation: The medaka Oryzias latipes (also known as the Japanese ricefish) is of similar size as the zebrafish. The medaka is easy to breed in laboratory conditions and its eggs are transparent making easy to follow the embryonic development.
2. The larval model to study the development biology is ______________
a) medaka
b) milkfish
c) catfish
d) zebrafish
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Explanation: The zebrafish Danio rerio is established as an embryological or larval model to study developmental biology. Since zebrafish lays eggs that are translucent their development is easy to follow.
3. The Muller-Dobshansky-Bateson phenomenon is applicable to ______________
a) protein divergence
b) protein convergence
c) loss of gene function
d) gain of gene function
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Explanation: The Muller-Dobshansky-Bateson phenomenon applies to proteins diverging into specific lineages from a common ancestor. The phenomenon is vital and has an impact on studying the effects of human transgenes in fish lineage.
4. Which fish model can be used to model sexual maturation disorders?
a) Platyfish
b) Eel
c) Toadfish
d) Damselfish
View Answer
Explanation: Platyfish and swordtails are used to model such human diseases as cancer and sexual maturation disorders. These fish models can be easily bred and maintained in the laboratory aquarium.
5. Antarctic icefish is used as a model for _____________
a) anemia
b) cancer
c) melanoma
d) autism
View Answer
Explanation: Several species of Antarctic icefish are used to as model for studying such diseases as osteoporosis and anemia. The fish are difficult to culture and breed in the laboratory, transgenic methods are not possible.
6. Which fish model is used to study sleep disorders in biomedical research?
a) Pufferfish
b) Flatfish
c) Zebrafish
d) Blind caefish
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Explanation: The Astyanax mexicanus species of blind cavefish are used as models for such human disorders as retinal degeneration, pigmentation disorders and sleep disorders. The genome mapping of the species is in progress.
7. The cichlid fish is used as a model for _______________
a) fertility disorders
b) osteoporosis
c) cancer
d) facial malformations
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Explanation: Several Cichlidae species of the cichlid fish are used as models for craniofacial malformations in humans. Transgenic methods are established for some of the fish species of this family.
8. Amazon molly is not used as a model organism for studying ______________
a) cystic fibrosis
b) infectious diseases
c) thyroid cancer
d) melanoma
View Answer
Explanation: The Poecilia formosa species of Amazon molly are used for studying the underlying conditions of such disorders as melanoma, thyroid cancer and infectious diseases. Cell lines are available for this fish species.
9. Eell is used as a model organism in the biomedical research of ________________
a) viral cancer
b) intoxication
c) liver cancer
d) bone demineralization
View Answer
Explanation: Eel is used as a model organism for studying the underlying mechanisms of bone demineralization and Wilm’s tumor in human beings. The Anguilla anguilla and Anguilla japonica are used in particular.
10. Cell lines are not established for Eel species.
a) True
b) False
View Answer
Explanation: Cell lines are established for Anguilla species of Eel which are used for studying bone demineralization. The eel are easy to maintain however breeding is not possible under laboratory conditions.
11. Damselfish is used as a model for _____________
a) viral cancers
b) bone cancer
c) liver cancer
d) blood cancer
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Explanation: Stegastes partitus species of the damselfish are used as model organism for studying such human diseases as viral cancers and neurofibromatosis. The fish are easy to maintain in aquarium under laboratory conditions.
12. Which fish model is used to study sickle cell anemia?
a) Damselfish
b) Medaka
c) Toadfish
d) Killifish
View Answer
Explanation: Porichthys notatus and Opsanus beta species of toadfish are used as model organisms for studying hepatic encephalopathy and sickle cell anemia. Breeding under laboratory conditions is difficult and cell lines are not established for the species.
13. Mummichog is used as a model organism for studying ________________
a) encephalitis
b) bronchitis
c) dermatitis
d) environmental toxicology
View Answer
Explanation: The mummichog, also known as the Atlantic killifish is found along the coast of the United States and Canada. Its maintenance, culture and transgenesis are possible under laboratory conditions. Species Fundulus heteroclitus is used as model organism for studying environmental toxicology, intoxication and cystic fibrosis.
14. Turquoise killifish is used for studying age-related disorders.
a) True
b) False
View Answer
Explanation: Nothobranchius furzeri species of turquoise killifish are used as model organisms for studying aging and aging-related disorders in human beings. Cell lines and transgenic methods are established for the model.
15. Which fish model is used for studying liver cancer?
a) Rainbow trout
b) Minnow
c) Goldfish
d) Toadfish
View Answer
Explanation: Oncorhynchus mykiss, Rainbow trout is used as a model organism for studying carcinogen-induced cancer, particularly liver cancer in humans. Common carcinogens include benzene, vinyl chloride, nickel and cadmium.
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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