Hormone Metabolism - Mock Test 22

Question 211

All the following statements about TSH are true except?

A) It is a glycoprotein B) It is made up of α- and β-subunits C) Receptor recognition involves both the subunits D) Its subunit is identical with those of FSH and LH

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Question 212

Hormonal activity of ACTH is completely lost on removal of?

A) 5 C-terminal amino acids B) 10 C-terminal amino acids C) 15 C-terminal amino acids D) None of these

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Question 213

CRH is a polypeptide made up of?

A) 39 amino acids B) 41 amino acids C) 51 amino acids D) 84 amino acids

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Question 214

ACTH is a polypeptide made up of?

A) 39 amino acids B) 41 amino acids C) 51 amino acids D) 84 amino acids

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Question 215

Regulation of ACTH secretion occurs through?

A) Corticotropin releasing hormone (CRH) and corticotropin release inhibiting hormone (CRIH) of hypothalamus B) Feedback inhibition by cortisol C) CRH and feedback inhibition by cortisol D) CRIH and feedback inhibition by cortisol

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Question 216

All the following statements about ACTH are true except?

A) It is a tropic hormone B) Its target cells are located in adrenal cortex C) Its receptors are located in the cell membrane D) Its second messenger is inositol triphosphate

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Question 217

All the following statements about proopiomelanocortin are true except?

A) It is made up of 285 amino acids B) It is synthesised in pars intermedia and anterior lobe of pituitary gland C) It is the precursor of ACTH and melatonin D) It is the precursor of corticotropin like intermediate lobe peptide and endorphins

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Question 218

All of the following can be formed from pro-opiomelanocortin except?

A) α-and β-MSH B) β-and γ-Lipotropins C) α-and β-Endorphins D) FSH

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Question 219

Precursor of ACTH is?

A) Cholesterol B) Pregnenolone C) Corticotropin D) Pro-opiomelanocortin

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Question 220

Secretion of prolactin is regulated by?

A) Feedback inhibition B) Prolactin releasing hormone C) Prolactin release inhibiting hormone D) All of these

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