NEET UG Chemical Coordination and Integration — practice questions

Explore 2 free Chemical Coordination and Integration questions in NEET UG Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Chemical Coordination and Integration questions and exercises with answers

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TRH acts through TSH to cause release of which hormones?Read the answer and worked solution →PTH promotes conversion of vitamin D into which active form?Read the answer and worked solution →

Worked practice questions

TRH acts through TSH to cause release of which hormones?

Cortisol
Aldosterone
Melatonin
T3 and T4

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Correct answer: D. T3 and T4

Thyrotropin releasing hormone raises TSH, which makes the thyroid release T3 and T4.

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PTH promotes conversion of vitamin D into which active form?

25-hydroxyvitamin D3
1,25-dihydroxyvitamin D3
Ergocalciferol (D2)
7-dehydrocholesterol

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Correct answer: B. 1,25-dihydroxyvitamin D3

PTH stimulates formation of 1,25-dihydroxyvitamin D3, which boosts gut calcium absorption.

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