This set of Marine Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Mussel Adhesive Proteins”.
1. Which is not a property of mussel adhesive proteins (MAPs)?
a) Skin irritability
b) Biodegradability
c) Water displacement
d) Biocompatibility
View Answer
Explanation: Marine mussels use adhesives termed mussel adhesive proteins (MAPs) have characteristics properties that make them industrially important. These include biodegradability, strong adhesion to various substrates, water displacement, and biocompatibility.
2. DOPA is a key factor in underwater adhesives.
a) True
b) False
View Answer
Explanation: 3,4-dihydroxy-L-phenylalanine is a key factor for strong adhesion observed in mussel adhesive proteins. The molecule plays a dual role in surface adhesion as well as cohesive cross-linking.
3. Which is not a producer of MAPs?
a) Zebrafish
b) Mussels
c) Barnacles
d) Sandcastle worms
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Explanation: Invertebrates and mostly such marine-fouling organisms as mussels, barnacles, and sandcastle worms produce mussel adhesive proteins (MAPs). Through the adhesives they experience continuous mechanical stress.
4. ________________ is a bundle of fibers secreted by mussels.
a) Alanine
b) Tyrosine
c) Byssus
d) DOPA
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Explanation: Byssus contains over 90% proteins; it is fabricated and utilized by a mussel in order to adhere to a substratum. At the end of every byssal thread is a byssal plaque where underwater adhesion occurs.
5. 6 types of MAPs have been discovered till date.
a) True
b) False
View Answer
Explanation: From various marine sources, 6 different types of mussel adhesive proteins (MAPs) along with foot proteins type-1 (fp-1) through type-6 (fp-6) have been discovered. Each foot protein has a specific role to play in the adhesion.
6. Which is the first identified and most studied MAP?
a) Fp-1
b) Fp-2
c) Fp-3
d) Fp-5
View Answer
Explanation: Foot protein-1 (molecular weight 108 kDa) is the first discovered and most studied mussel adhesive protein. It is also the most abundant and covers the exposed byssus surface entirely.
7. Foot protein-6 is _________________
a) high molecular weight protein
b) DOPA concentrated
c) resistant to proteolysis
d) cysteine rich
View Answer
Explanation: Foot protein-6 (molecular weight 11 kDa) is a cysteine rich protein with abundance of thiol group. This biochemical structure modulates inter-protein thiol-mediated redox of DOPA molecules.
8. The recombinant fp-151 was constructed using ___________________
a) Mussel
b) E. coli
c) S. cerevisiae
d) P. notatum
View Answer
Explanation: The recombinant foot protein-151 was constructed using competent E. coli cells that were genetically engineered to overexpress genes for various foot proteins. This was done to boost productivity and make production of MAPs economically viable.
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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