The antibiotic that inhibits bacterial protein synthesis by binding to the 30S ribosomal subunit is: MCQ with Answer and Explanation

Explanation:
Ergotism is caused by the fungus Claviceps purpurea, which infects the ovaries of rye and other grasses, replacing the seeds with hard, dark sclerotia (ergots). These sclerotia contain potent alkaloids (like ergotamine) that cause severe vasoconstriction and neurological symptoms in humans and animals consuming contaminated grain. Ustilago causes smut, and Puccinia causes rust.

Explanation:
The poly-A tail is a long chain of adenine nucleotides (typically 100-250) added to the 3' end of a pre-mRNA molecule during post-transcriptional processing in the nucleus. Its primary functions are to protect the mRNA molecule from enzymatic degradation in the cytoplasm (by exonucleases), to facilitate the export of the mature mRNA from the nucleus to the cytoplasm, and to promote translation by helping to recruit ribosomes. It also plays a role in determining the lifespan of the mRNA in the cytoplasm.

Explanation:
The Murrah is a premier indigenous breed of water buffalo in India, renowned for its high milk yield and fat content. The White Leghorn is an exotic breed of chicken highly valued in the poultry industry for its excellent egg-laying capacity. Apiculture is the rearing and management of honeybees for honey and wax; fish farming is called pisciculture or aquaculture. Thus, statements 1 and 2 are correct.