The 'Hormone Gastrin' is secreted by the 'G cells' of the stomach and primarily stimulates: MCQ with Answer and Explanation

Explanation:
Pantothenic acid (vitamin B₅) is a component of coenzyme A (CoA), which is essential for the metabolism of carbohydrates, fats, and proteins via the Krebs cycle and fatty acid synthesis. Thiamine is TPP, biotin for carboxylation, folic acid for one-carbon transfer.

Explanation:
Antonie van Leeuwenhoek, a Dutch microscopist, designed single-lens microscopes and observed bacteria, protozoa, sperm cells, and RBCs for the first time, calling them 'animalcules'. Hooke observed dead cork cells. Schleiden proposed that plants are composed of cells, Virchow stated 'Omnis cellula e cellula'. Leeuwenhoek is rightly considered the father of microbiology for his pioneering observations of living microbes.

Explanation:
The Chipko movement, initiated in the 1970s in Uttarakhand (India), involved villagers (mainly women) hugging trees to prevent them from being cut down by contractors. It was a non-violent protest for forest conservation and sustainable use. Sunderlal Bahuguna was a prominent leader. It raised awareness about deforestation and environmental protection.