Animal Husbandry - Study Mode
[#481] First anti-rabies vaccine was developed by
Correct Answer
(B) Louis Pasteur
Explanation
Solution: First anti-rabies vaccine was developed by Louis Pasteur. Louis Pasteur was a French chemist and microbiologist renowned for his discoveries of the principles of vaccination, microbial fermentation, and pasteurization. His works are credited with saving millions of lives through the development of vaccines for rabies and anthrax. Pasteur produced the first vaccine for rabies by growing the virus in rabbits and then weakening it by drying the affected nerve tissue.
[#482] Mineral needed for acetate incorporation in cholesterol biosynthesis
Correct Answer
(C) Manganese
Explanation
Solution: Mineral needed for acetate incorporation in cholesterol biosynthesis is Manganese. Manganese and chromium were found to increase the incorporation of acetate into cholesterol by 100 percent, whereas vanadium depressed cholesterol synthesis by 50 percent. Manganese acts as a cofactor of mevalonate kinase and farnesyl pyrophosphate synthetase.
[#483] In classification of helminthes the higher taxa platyhelminthes containing helminthes of veterinary importance are
Correct Answer
(A) Flat worm
Explanation
Solution: In classification of helminthes the higher taxa Platyhelminthes containing helminthes of veterinary importance are Flatworm. Flatworms are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates. They are acoelomates and have no specialized circulatory and respiratory organs, which restricts them to having flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion.
[#484] Tussar silk is obtained from
Correct Answer
(B) Antheraea roylei
Explanation
Solution: Tussar silk is obtained from Antheraea roylei. Tussar silk also known as kosa silk is produced from larvae of several species of silkworms belonging to the moth genus Antheraea. These silkworms live in the wild forests in trees belonging to Terminalia species and Shorea robusta, as well as other food plants such as jamun and oak found in South Asia, eating the leaves of the trees on which they live. Tussar silk is valued for its rich texture and natural, deep-gold colour, and varieties are produced in many countries, including India, Japan and Sri Lanka.
[#485] Viruses having Reverse transcriptase enzyme
Correct Answer
(A) Retrovirus
Explanation
Solution: Viruses having Reverse transcriptase enzyme is Retroviruses. The enzyme reverse transcriptase (RT) was discovered in retroviruses almost 50 years ago. A retrovirus is a type of virus that inserts a DNA copy of its RNA genome into the DNA of a host cell that it invades, thus changing the genome of that cell. After invading a host cell's cytoplasm, the virus uses its reverse transcriptase enzyme to produce DNA from its RNA genome, the reverse of the usual pattern, thus retro .