Louis Pasteur is famous for developing the first vaccine for: MCQ with Answer and Explanation

Explanation:
The liver uses the urea cycle (ornithine cycle) to convert highly toxic ammonia, produced from amino acid deamination, into less toxic urea, which is excreted by the kidneys. The kidneys filter urea but do not synthesize it. Pancreas is digestive/endocrine, intestine absorbs nutrients.

Explanation:
Edward Jenner developed the first successful vaccine using cowpox to protect against smallpox in 1796. Pasteur developed rabies vaccine, Salk polio, Koch identified TB bacterium.

Explanation:
Lichens are a mutualistic association between an alga (or cyanobacterium) and a fungus. The alga photosynthesizes, providing food; the fungus provides shelter, water, and minerals. Both benefit. Tapeworm is parasitism, barnacles on whales commensalism (or sometimes parasitism depending on effect), mosquito blood-sucking is parasitism.