$$\text{PER} = \frac{\text{Wet Weight Gain (g)}}{\text{Crude Protein Consumed (g)}}$$
When fish are fed diets containing high digestible carbohydrates, the carbohydrates exert a protein-sparing effect for basal energy.
However, excess ingested glucose is channeled into de novo lipogenesis, accumulating as excessive visceral and carcass fat deposition. This artificially increases gross weight gain and inflates the apparent PER.
Correct Option: Option 3 (High fat deposition).
Explanation not matching this question?क्या व्याख्या इस प्रश्न से मेल नहीं खा रही?Report
Q.67
Aquaculture- ICAR JRF/SRF 2024
MCQ (Single Correct)+4−1
Reverse primer for a gene can be a part of the sequence of
The Forward Primer hybridizes to the complementary anti-sense strand, matching the sequence at the $5'$ end of the coding cDNA.
The Reverse Primer hybridizes to the sense strand and is complementary to the sequence at the $3'$ end of the cDNA coding sequence.
Correct Option: Option 3 (3' end of cDNA).
Explanation not matching this question?क्या व्याख्या इस प्रश्न से मेल नहीं खा रही?Report
Q.68
Aquaculture- ICAR JRF/SRF 2024
MCQ (Single Correct)+4−1
Most of the fishes are unable to synthesize polyunsaturated fatty acids of n-3 and n-6 series. Which one of the following fish
has the capacity to convert alpha-linolenic acid to docosahexaenoic acid?
Freshwater teleosts like the Common Carp (Cyprinus carpio) possess fully functional fatty acyl desaturases ($\Delta 6$ and $\Delta 5$ desaturases) and elongases (Elovl5 and Elovl2).
This enzymatic pathway enables them to bioconvert the $18$-carbon precursor $\alpha$-linolenic acid (ALA, $18:3\, n-3$) through sequential desaturation and elongation reactions into long-chain polyunsaturated fatty acids:
Vitamin C (Ascorbic Acid): Acts as an essential biological water-soluble reducing agent and hydrogen/electron donor in metabolic hydroxylation reactions.
Specifically, it reduces oxidized active-site iron ($Fe^{3+} \to Fe^{2+}$) in prolyl-4-hydroxylase and lysyl-hydroxylase enzymes, which hydroxylate proline and lysine residues during collagen biosynthesis.
Correct Option: Option 2 (Vitamin C).
Explanation not matching this question?क्या व्याख्या इस प्रश्न से मेल नहीं खा रही?Report
Q.70
Aquaculture- ICAR JRF/SRF 2024
MCQ (Single Correct)+4−1
The essential amino acid tryptophan deficiency leads to
Tryptophan is essential for 5-hydroxytryptamine (serotonin) synthesis and regulates neuroendocrine calcification and collagen fibrillogenesis in vertebrae.
Correct Option: Option 1 (Scoliosis and lordosis).
Explanation not matching this question?क्या व्याख्या इस प्रश्न से मेल नहीं खा रही?Report
Report Issue / Suggest Correctionत्रुटि रिपोर्ट / संशोधन सुझाव
No official replies published yet for this questionइस प्रश्न पर अभी कोई आधिकारिक समाधान प्रकाशित नहीं है
Have an objection, typo, or doubt? Submit a report in Tab 1. Our subject experts will audit the question and publish the official resolution here.यदि आपको इस प्रश्न या उत्तर कुंजी में कोई आपत्ति है, तो 'त्रुटि रिपोर्ट' टैब से विवरण भेजें। हमारी विषय विशेषज्ञ टीम समीक्षा कर आधिकारिक समाधान प्रकाशित करेगी।