alleryThe IODINE-containing hormone is:
AInsulin
BThyroxine
CAdrenaline
DTestosterone
Answer & Solution
Correct answer: B. Thyroxine
1. THYROXINE (T₄) contains 4 iodine atoms; T₃ contains 3.
2. Iodine deficiency → goitre and hypothyroidism.
3. India: iodised salt is mandated to prevent endemic goitre.
_Source: syllabus Science Ch 6 §6.2 Thyroxine_
Keep practising Unit 8J: Comparative Physiology: Transport & Regulation
Browse all Unit 8J: Comparative Physiology: Transport & Regulation questions for AP Biology, or explore more Biology topics.
Related questions
Plants RESPOND to stimuli mainly through:The hormone that controls the level of sugar in blood by promoting glucose uptake by cellsThe number of pairs of cranial nerves in humans is:Geotropism shown by the roots of a plant is:The gap between two neurons across which a nerve impulse is transmitted (chemically) is thAuxin is a plant hormone that mainly promotes:Phototropism is the:Adrenaline (epinephrine), the fight-or-flight hormone, is produced by the: