This set of Marine Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Seafood Nutraceuticals – Set 3”.
1. Chitosan-alginate ________________
a) is a buffering agent
b) is a gelling agent
c) removes lipids from exoskeleton
d) removes protein from water
View Answer
Explanation: Chitosan and alginate are naturally occurring polysaccharides. The conglomeration of both is used to remove proteins (marine peptides, enzymes, and bioactive compounds) from seafood industry waste water.
2. Choose the appropriate option.
| 1. Chondroitin sulfate | a. Supports joint health integrity |
| 2. Heparin | b. Anticoagulant |
| 3. Keratan sulfate | c. Eye treatment |
a) 1-a, 2-b, 3-c
b) 1-c, 2-b, 3-a
c) 1-b, 2-c, 3-a
d) 1-b, 2-a, 3-c
View Answer
Explanation: The names of glycosaminoglycans of fish origin are given which have different applications. Chondroitin sulfate aids in maintaining joint health, heparin acts as a blood-thinning agent, and keratan sulfate is used for corneal transparency.
3. Choose the appropriate option.
| 1. Hyaluronic acid | a. Osteoporosis, tumor marker |
| 2. Chitin | b. Wide applications |
| 3. Chondroitin | c. Cartilage rebuilding |
a) 1-a, 2-b, 3-c
b) 1-c, 2-b, 3-a
c) 1-b, 2-a, 3-c
d) 1-a, 2-c, 3-b
View Answer
Explanation: Glycosaminoglycans are a group of functional polysaccharides naturally occurring in exoskeleton of crustaceans. Depending upon the structural moieties present, different GAGs have wide ranging applications.
4. Chitosan represents deacetylated chitin.
a) True
b) False
View Answer
Explanation: Chitosan is a collective name given to chitin deacetylated to different degrees, at different processing temperatures. Chitosan is industrially produced from chitin by using 30-60% of sodium or potassium hydroxide.
5. Which of the following is an effective moisturizer?
a) Hyaluronic acid
b) Sulfuric acid
c) Fibronectin
d) Pectin
View Answer
Explanation: Hyaluronic acid (HA) is a naturally occurring polysaccharide that acts as an effective moisturizer due to its strong water holding capacity. With age HA levels in the body decrease leading to dry skin and wrinkles.
6. Hot water or hot acetic acid is used for __________________
a) chitin conversion
b) bone softening
c) lipolysis
d) filleting
View Answer
Explanation: Hot water or hot acetic acid is used for softening of fish bones originating from seafood waste industry. Fish bones are a source of protein, calcium, and a wide variety of inorganic minerals.
7. Guanine is responsible for gleaming effect of fish.
a) True
b) False
View Answer
Explanation: Guanine is a nucleobase found in DNA and RNA. In certain species of fish it occurs in scale membranes giving a gleaming effect to the fish. Combined with collagen and calcium phosphate it forms a silvery white thinning substance.
8. Chondroitin sulfate, dermatan sulfate, heparin sulfate are examples of _______________
a) GAGs
b) Mineral acids
c) Mineral oils
d) Organic solvents
View Answer
Explanation: Glycosaminoglycans (GAGs) are polysaccharides having multiple functions. Chondroitin sulfate, heparin sulfate, keratin sulfate are all found in connective tissues in conjunction with collagen, elastin etc.
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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