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Chemical Coordination and Integration

AIPMT 2004MCQEasy📈 Topic in 25% papers+4−1
Ques. 1AIPMT 2004

Which one of the following hormones is modified amino acid?

  1. Epinephrine
  2. Progesterone
  3. Prostaglandin
  4. Estrogen

Answer

(1) Epinephrine

Solution

As per NCERT, on the basis of their chemical nature hormones are divided into (i) peptide, polypeptide, protein hormones, (ii) steroids, (iii) iodothyronines and (iv) amino-acid derivatives (e.g., epinephrine).

⇒ Epinephrine (adrenaline) is a catecholamine formed from the amino acid tyrosine.

∵ Progesterone and estrogen are steroids, and prostaglandins are derived from fatty acid (arachidonic acid).

∴ Epinephrine is a modified amino acid.

Answer: (1)

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Ques. 2AIPMT 2004

Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency?

  1. Luteinizing hormone – Failure of ovulation
  2. Insulin – Diabetes insipidus
  3. Thyroxine – Tetany
  4. Parathyroid – Diabetes mellitus
Ques. 3AIPMT 2004

Chemically hormones are

  1. biogenic amines only
  2. proteins, steroids and biogenic amines
  3. proteins only
  4. steroids only
Ques. 4AIPMT 2004

Duodenum, which has characteristic Brunner's glands, secretes two hormones called

  1. kinase, estrogen
  2. secretin, cholecystokinin
  3. prolactin, parathormone
  4. estradiol, progesterone.
Out of syllabus
Ques. 5AIPMT 2003

Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency?

  1. Relaxin – Gigantism
  2. Prolactin – Cretinism
  3. Parathyroid hormone – Tetany
  4. Insulin – Diabetes insipidus
Ques. 6AIPMT 2002

Acromegaly is caused by

  1. excess of STH
  2. excess of thyroxine
  3. deficiency of thyroxine
  4. excess of adrenaline
Ques. 7AIPMT 2002

Adrenaline directly affects

  1. S.A. node
  2. -cells of Langerhans
  3. dorsal root of spinal nerve
  4. epithelial cells of stomach
Ques. 8AIPMT 2002

When both ovaries are removed from rat then which hormone is decreased in blood?

  1. Oxytocin
  2. Prolactin
  3. Estrogen
  4. Gonadotropin releasing factor
Ques. 9AIPMT 2000

Melatonin is secreted by

  1. pineal body
  2. skin
  3. pituitary gland
  4. thyroid
Ques. 10AIPMT 2000

MSH is secreted by

  1. anterior lobe of pituitary
  2. middle lobe of pituitary
  3. posterior lobe of pituitary
  4. endostyle

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