The bacterium that causes peptic ulcers is: MCQ with Answer and Explanation

Explanation:
Vitamin E (tocopherol) is a lipid-soluble antioxidant that scavenges free radicals and prevents lipid peroxidation of cell membranes. Vitamin C is water-soluble antioxidant, A is for vision, K for clotting.

Explanation:
Epithelial tissue forms sheets covering external surfaces (skin) and lining internal organs and cavities. It functions in protection, absorption, secretion, and sensation. Connective tissue supports and binds, muscle contracts, nervous transmits impulses. Epithelial cells are tightly packed with little extracellular matrix.

Explanation:
The correct taxonomic hierarchy in ascending order is: Species (lowest) → Genus → Family → Order → Class → Phylum (or Division in plants) → Kingdom (highest). Some classifications add Domain above Kingdom. This system groups organisms based on shared characteristics. Binomial nomenclature uses Genus and Species. Option A correctly places Family before Order.