Free Chemical Coordination and Hormones MCQs with Answers
257 Chemical Coordination and Hormones MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Chemical coordination uses hormones released by endocrine glands and carried in blood to specific target cells. Coverage includes the pituitary, thyroid, pancreas, adrenal glands, ovaries and testes, feedback control, and the contrast between slower, longer-lasting hormonal responses and rapid nervous coordination.
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257 questions · page 12 of 13
- A. TSH
- B. ACTH
- C. ADH
- D. STH
Explanation: Somatotrophin hormone (STH) continues to promote protein synthesis throughout the body even after adolescence.
Correct answer: STH- A. STH and LH
- B. FSH and STH
- C. ACTH and LH
- D. FSH and LH
Explanation: Explanation:FSH and LH are both gonadotropins that are involved in the regulation of reproductive function.
Correct answer: FSH and LH- A. Glycerol
- B. Sterol
- C. Amino acids
- D. Cholesterol
Explanation: Option[A] Lipids are made from glycerolOption[b] Sterols are sub groups of steroidsOption[c] Amino acid is the basic unit of protein.
Correct answer: Cholesterol- A. They initiate new biochemical reactions
- B. They are poured directly into blood
- C. They may be proteins
- D. They affect target cells
Explanation: Option [A] Hormones do not start a new biochemical reaction itself instead whenever a stimulus hormone is released in blood and reaches…
Correct answer: They initiate new biochemical reactions- A. Aldosterone
- B. Epinephrine
- C. Androgen
- D. Corticosterone
Explanation: The adrenal medulla produces catecholamines, epinephrine, and norepinephrine.
Correct answer: Epinephrine- A. Adrenaline, Aldosterone
- B. Epinephrine, Nor-epinephrine
- C. Cortisone, Oxytocin
- D. Thyroxine, Nor-epinephrine
Explanation: Epinephrine and norepinephrine stimulate the effects of the sympathetic system (fight or flight).
Correct answer: Epinephrine, Nor-epinephrine- A. Renin
- B. Aldosterone
- C. Angiotensin
- D. CPK
Explanation: Aldosterone (ALD) is a hormone that helps regulate your blood pressure by managing the levels of sodium (salt) and potassium in your blood…
Correct answer: Aldosterone- A. Renin
- B. Antidiuretic hormone
- C. Angiotensin
- D. Growth Factor
Explanation: The antidiuretic hormone, also known as vasopressin, is produced in the hypothalamus and stored in the posterior pituitary gland.
Correct answer: Antidiuretic hormone- A. FSH
- B. MSH
- C. Melatonin
- D. Prolactin
Explanation: Melatonin is a hormone secreted by the pineal gland that helps regulate our diurnal (daily) rhythms, including sleep-wake cycles.
Correct answer: Melatonin- A. Iodine metabolism
- B. Protein metabolism
- C. Glucose metabolism
- D. Basal metabolic rate
Explanation: Thyroxine hormone stimulates various metabolic activities such as the metabolism of glucose, cholesterol metabolism etc leading to an…
Correct answer: Basal metabolic rate- A. TSH
- B. STH
- C. ACTH
- D. Gonadotropin hormone
Explanation: Somatotrophic hormone (STH), also known as growth hormone (GH), is the only hormone released by the anterior pituitary that is not…
Correct answer: STH- A. Liver
- B. Adrenals
- C. Thyroid
- D. Pancreas
Explanation: The pancreas has the dual function of secreting glucagon and insulin into blood (endocrine) and secreting enzymes in the form of the…
Correct answer: Pancreas- A. Enlargement of bones
- B. Slow heart rate and nervousness
- C. Loss of body weight
- D. Sexual precocity
Explanation: Hyperthyroidism happens when the thyroid gland makes too much thyroid hormone. This condition also is called overactive thyroid.
Correct answer: Loss of body weight- A. Adrenal cortex
- B. Adrenal medulla
- C. Cerebral cortex
- D. Cerebral medulla
Explanation: Cortisone is the man-made form of the natural hormone cortisol. Cortisol is a steroid hormone that is produced by the adrenal glands…
Correct answer: Adrenal cortex- A. Sodium in water
- B. Calcium in water
- C. Iodine in water
- D. Sugar in water
Explanation: Goiter is caused by an iodine deficiency, which is vital for the production of thyroid hormones.
Correct answer: Iodine in water- A. Thyroxine
- B. Non_adrenaline
- C. Adrenaline
- D. All of above
Explanation: Thyroxine: Thyroxine was the first hormone to be isolated and crystallized in 1914, making it a significant milestone in endocrinology.
Correct answer: Thyroxine- A. Thyroxine
- B. Nor adrenalin
- C. Adrenalin
- D. All of the above
Explanation: Thyroxine, also known as T4, is the first hormone to be identified as a crystalline substance.
Correct answer: Thyroxine- A. Protein hormones
- B. Non-steroid hormones
- C. Steroid hormones
- D. Peptide hormones
Explanation: Steroid hormones are synthesized from cholesterol and include key hormones such as testosterone, estrogen, cortisol, and aldosterone.
Correct answer: Steroid hormones- A. PTH (Parathyroid Hormone)
- B. Thyroxine
- C. Aldosterone
- D. Calcitonin
Explanation: Thyroxine is the hormone secreted by the thyroid gland that plays a key role in regulating the body's metabolism.
Correct answer: Thyroxine- A. Testes and ovaries
- B. Adrenal glands and gonads
- C. Adrenal cortex and gonads
- D. Gonads and thyroids
Explanation: Steroid hormones are primarily produced by the adrenal cortex and the gonads.
Correct answer: Adrenal cortex and gonads