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Chemical Coordination and Integration

AIPMT 2007MCQEasy📈 Topic in 12% papers+4−1
Ques. 1AIPMT 2007

Compared to a bull a bullock is docile because of:

  1. Lower levels of adrenalin/noradrenalin in its blood
  2. Lower levels of blood testosterone
  3. Higher levels of thyroxin
  4. Higher levels of cortisone

Answer

(2) Lower levels of blood testosterone

Solution

A bullock is a castrated bull, i.e. its testes are removed.

As per NCERT, the Leydig cells of the testis secrete androgens, mainly testosterone, which influence male sexual behaviour (libido) and aggressiveness.

Without testes the blood testosterone level is very low.

The bullock is docile because of lower levels of blood testosterone.

Answer: (2)

Out of syllabus

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Ques. 2AIPMT 2006

Which hormone causes dilation of blood vessels, increased oxygen consumption and glucogenesis?

  1. Glucagon
  2. ACTH
  3. Insulin
  4. Adrenaline
Ques. 3AIPMT 2006

Which of the following is an accumulation and release center of neurohormones?

  1. Anterior pituitary lobe
  2. Posterior pituitary lobe
  3. Intermediate lobe of the pituitary
  4. Hypothalamus
Ques. 4AIPMT 2006

A steroid hormone which regulates glucose metabolism is

  1. cortisone
  2. cortisol
  3. corticosterone
  4. 11-deoxycorticosterone.
Ques. 5AIPMT 2006

Which one of the following is not a secondary messenger in hormone action?

  1. cAMP
  2. cGMP
  3. Calcium
  4. Sodium
Ques. 6AIPMT 2006

Which one of the following statements is correct?

  1. Endocrine glands regulate neural activity, but not vice versa.
  2. Neurons regulate endocrine activity, but not vice versa.
  3. Endocrine glands regulate neural activity, and nervous system regulates endocrine glands.
  4. Neither hormones control neural activity nor the neurons control endocrine activity.
Ques. 7AIPMT 2004

Which one of the following hormones is modified amino acid?

  1. Epinephrine
  2. Progesterone
  3. Prostaglandin
  4. Estrogen
Ques. 8AIPMT 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. 9AIPMT 2004

Chemically hormones are

  1. biogenic amines only
  2. proteins, steroids and biogenic amines
  3. proteins only
  4. steroids only
Ques. 10AIPMT 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. 11AIPMT 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

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