This set of Marine Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Sustainable Marine Food Production Systems – Set 2”.
1. Chaperones inhibit the change of protein conformation.
a) True
b) False
View Answer
Explanation: Chaperones are molecules that hold the proteins together and prevent any change of conformation when temperature reaches 42°C. Therefore aggregation of proteins is also prevented.
2. Which is not a way of measuring ROS in a culture system?
a) Comet assay
b) Bradford’s assay
c) Biomolecule damage
d) Anti-oxidant detection
View Answer
Explanation: Bradford’s assay is used to measure the concentration of proteins in a sample. To measure reactive oxygen species comet assay, detection of anti-oxidant levels, and measurement of damage occurred to biomolecules is done.
3. WINFEED is software for ____________________
a) copepod calculation
b) amino acid estimation
c) body weight calculation
d) feed conversion
View Answer
Explanation: WINFEED is a software for fish feed formulation that operates by taking into consideration the fish species, ingredients subject to availability, and other vital parameters. Fish feed formulation is essential to ensure sustainability of marine food production systems.
4. Ammonia is excreted through gills while phosphorus through urine.
a) True
b) False
View Answer
Explanation: The fish feed has to be formulated strategically to keep up with all the nutrient losses that occur as a result of basal metabolism. Significant amount of ammonia is lost through gills while phosphorus is excreted through urinary bladder.
5. Which is an insoluble NSP used in fish feed?
a) Sunflower meal
b) Filled peas
c) Wheat grain
d) Linseed oil
View Answer
Explanation: The basic components of a fish feed are basal mix, starch, insoluble and soluble non-starch polysaccharides (NSP). Sunflower meal (SFM) is used as an insoluble non-starch polysaccharide (NSP).
6. Which of the following is banned for use in a fish feed?
a) Soya meal
b) Fish meal
c) Rice bran
d) Chicken waste
View Answer
Explanation: Chicken waste is banned for use as a fish feed because it causes increased hydrogen sulfide in culture water. Alternatively the chicken can be boiled, dried and used as a supplement along with rice bran.
7. Which of the following is not true for fish feed?
a) Initial feed 7% of body weight
b) Water hyacinth is a good source
c) Small fish require frequent feed
d) Reduce feed till 1% gradually
View Answer
Explanation: There are various parameters that are taken into consideration for efficient feed formulation and feeding frequency. Water hyacinth is not a good source of fish feed due to diverse associated microbial communities.
8. ___________________ grows when redox potential for iron drops below -150 mV.
a) Shrimps
b) Daphnia
c) Phytoplankton
d) Water hyacinth
View Answer
Explanation: Usual pollutants in aquaculture such as detritus, ammonia, and hydrogen sulfide are susceptible to changes in the redox potential. For iron when redox potential drops below -150 mV significant growth of phytoplankton occurs.
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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