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 11 of 13
- A. Estradiol
- B. Aldosterone
- C. Testosterone
- D. Prostaglandins
- E. Oestrogen
Explanation: Prostaglandins are lipid compounds derived from fatty acids that have various physiological functions in the body.
Correct answer: Prostaglandins202. Select the option which correctly matches the endocrine gland with its hormone and its function :
- A. Option A: Thyroid gland - Insulin - Regulates blood sugar levels
- B. Option B: Adrenal gland - Estrogen - Regulates female reproductive system
- C. Option C: Testis - Testosterone - Develops male characteristics
- D. Option D: Pancreas - Thyroxine - Regulates metabolism
Explanation: Testis are produced by testosterone. The testes are the male reproductive glands that produce sperm for fertilization and the hormone…
Correct answer: Option C: Testis - Testosterone - Develops male characteristics- A. Anterior lobe of the pituitary
- B. Middle lobe of pituitary
- C. Posterior lobe of the pituitary
- D. Endostyle
Explanation: Option B is correct.The middle lobe of the pituitary secretes a hormone named melanocyte-stimulating hormone.
Correct answer: Middle lobe of pituitary- A. Growth of body
- B. Body metabolism
- C. Glucose breakdown
- D. Heat production
Explanation: STH stands for Somatotropin, also known as Growth Hormone (GH), which is produced by the anterior pituitary gland.
Correct answer: Growth of body- A. Prolactin, Thyroid Stimulating Hormone, Somatotropin Hormone
- B. Follicle Stimulating Hormone, Luteinizing Hormone, Prolactin
- C. Adrenocorticotropic Hormone, Luteinizing Hormone, Follicle Stimulating Hormone
- D. Luteinizing Hormone, Follicle Stimulating Hormone, Thyroid Stimulating Hormone
Explanation: Gonadotropins are glycoprotein hormones secreted by gonadotropic cells of the anterior pituitary gland.
Correct answer: Follicle Stimulating Hormone, Luteinizing Hormone, Prolactin- A. Receptor → 2nd messenger → Activation of energy
- B. 2nd messenger → Receptor → Activation of energy
- C. Receptor → Activation of energy → 2nd messenger
- D. . Activation of energy → 2nd messenger → Receptor
Explanation: Water soluble hormones binds to the receptors on the plasma membrane which passes them.through the second messengers which results in the…
Correct answer: Receptor → 2nd messenger → Activation of energy- A. Thyroxin
- B. Triiodothyronine
- C. Calcitonin
- D. Glucagon
Explanation: The correct answer is Glucagon. Glucagon is secreted by the pancreas, not the thyroid gland.
Correct answer: Glucagon- A. Hypothalamus
- B. Pitutary gland
- C. Thyroid
- D. Parathyroid gland
Explanation: Hypothalamus is the part of the brain that releases a variety of hormones.
Correct answer: Hypothalamus- A. Respiratory system
- B. Nervous system
- C. Endocrine system
- D. Both b and c
Explanation: Animal coordination depends on both the nervous system, which sends rapid electrical signals, and the endocrine system, which releases…
Correct answer: Both b and c- A. Thyrotropin
- B. Corticotropin
- C. Somatotropin
- D. Prolactin
Explanation: Gigantism occurs when a child's pituitary gland makes too much growth hormone, which is also known as somatotropin.
Correct answer: Somatotropin- A. Thyroid stimulating hormone
- B. LH
- C. ACTH
- D. FSH
- E. ADH
Explanation: Explanation for this question will be added soon.
Correct answer: ADH- A. FSH
- B. Calcitonin
- C. Parathyroid hormone
- D. ADH
- E. Insulin
Explanation: Explanation for this question will be added soon.
Correct answer: ADH- A. Labor pains
- B. Body temperature
- C. Insulin production
- D. Thyroxin release
Explanation: Labor pains are an example of a physiological process controlled through positive feedback, where the response reinforces and amplifies…
Correct answer: Labor pains- A. Ovaries
- B. Hypothalamus
- C. Pituitary
- D. Testes
Explanation: Gonadotropins are released by the pituitary gland. Examples include LH, FSH etc.
Correct answer: Pituitary- A. Body temperature
- B. Glucagon production
- C. Labor contraction
- D. Parathyroid activity
Explanation: Oxytocin stimulates the muscle contractions that push the baby through the birth canal.
Correct answer: Labor contraction- A. Growth Hormone - Somatostatin
- B. Calcitonin - Parathyroid
- C. Adrenaline - Noradrenaline
- D. Insulin - Glucagon
Explanation: A is incorrect because somatostatin inhibits the release of growth hormone from the pituitary gland.
Correct answer: Adrenaline - Noradrenaline- A. Pituitary gland
- B. Thyroid gland
- C. Parathyroid gland
- D. Mammary gland
Explanation: The pituitary gland is sometimes called the "master" gland of the endocrine system because it controls the functions of many of the other…
Correct answer: Pituitary gland- A. Cortisone
- B. Adrenaline
- C. Insulin
- D. Thyroxin
Explanation: The steroids that are made almost exclusively in the adrenal glands are cortisol, 11-deoxycortisol, aldosterone, corticosterone, and…
Correct answer: Cortisone- A. ADH (Antidiuretic Hormone)
- B. Oxytocin
- C. Glucagon
- D. Thyroxin
Explanation: ADH is released in response to increased blood osmolality or decreased water content.
Correct answer: ADH (Antidiuretic Hormone)- A. Mg2+
- B. Na+
- C. K+
- D. Ca2+
Explanation: Parathyroid glands play a crucial role in regulating calcium levels in the blood.
Correct answer: Ca2+