IGCSE O Level Biology MCQs – Practice Test for Exam Prep

Thyroxin Function Multiple Choice Questions with Answers – PDF Download

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Free "Thyroxin Function MCQ" App Download with MCQ: Thyroxin is secreted from; with answers: thiamine deficiency, theological inheritance, thyroid glands, and muscles used for breathing to master life sciences. Practice Thyroxin Function Quiz Questions, download Apple Book (Free Chapter) to master revision techniques.

Thyroxin Function MCQs PDF Download – Prep Test

MCQ 1: Thyroxin is secreted from:

thiamine deficiency
theological inheritance
thyroid glands
muscles used for breathing

MCQ 2: An overactive thyroid gland may:

slow the metabolic rate
expedite the metabolic rate
may denature the metabolic enzymes
may increase the pH from 7 to 9 approx.

MCQ 3: Apart from other reasons, excess thyroxin may cause:

myxedema
heart attack
meningitis
obesity

MCQ 4: Function of thyroxin is to regulate the:

breathing rate
metabolic rate
sweat glands
prevention of heat loss

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