Free Coordination and Control MCQs with Answers
1,687 Coordination and Control MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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- A. Adrenal cortex
- B. Thyroid gland
- C. Intestine
- D. Pancreas
Explanation: Cholecystokinin and duocrinin are secreted by the intestine. They stimulate the pancreas to release enzymes in pancreatic juice and…
Correct answer: Intestine- A. Child birth
- B. Growth
- C. Lactation
- D. Both A and C
Explanation: Oxytocin is a hormone released by the posterior pituitary that helps the muscles of the uterus to contract during parturition (child…
Correct answer: Both A and C- A. Testosterone
- B. Thyroxine
- C. MSH
- D. LH
Explanation: Luteinsing Hormone (LH) in the male, induces the interstitial cells of the testes to produce male sex hormones named androgens such as…
Correct answer: LH- A. Anterior lobe of the pituitary
- B. Interstitial cells of testes
- C. Adrenal cortex
- D. Posterior part of the thyroid
Explanation: Gonadotrophic hormones are secreted by the anterior lobe of the pituitary gland.
Correct answer: Anterior lobe of the pituitary1165. Diabetes is due to
- A. Enzyme deficiency
- B. Iodine deficiency
- C. Na+ deficiency
- D. Hormonal deficiency
Explanation: Diabetes mellitus is caused by the deficiency of the hormone insulin which is secreted by the pancreas.
Correct answer: Hormonal deficiency- A. Elevates calcium level in blood
- B. Has no effect on calcium
- C. Elevates potassium level in blood
- D. Lowers calcium level in blood
Explanation: Calcitonin is secreted by the C cells. It regulates the concentration of calcium and phosphorus in the blood.
Correct answer: Lowers calcium level in blood- A. Enterokinase
- B. Enterogastrone
- C. Gastrin
- D. Renin
Explanation: Gastrin hormone is secreted by mucosa of stomach and it stimulates secretion of gastric juice.
Correct answer: Gastrin- A. Cholecystokinin
- B. Enterogastrone
- C. Gastrin
- D. Secretin
Explanation: Cholecystokinin and duocrinin are secreted by intestine. They stimulate the pancreas to release enzymes in pancreatic juice and stimulates…
Correct answer: Cholecystokinin- A. Adrenal cortex
- B. Pancreas
- C. Pituitary
- D. Thyroid
Explanation: The basal metabolism is the minimum amount of energy the body uses in order to maintain vital processes of the body.
Correct answer: Thyroid- A. Tyrosine
- B. Proline
- C. Tryptophan
- D. Glycine
Explanation: Hormones thyroxine, adrenaline and the pigment melanin are formed from tyrosine.
Correct answer: Tyrosine- A. LH
- B. Prolactin
- C. Oxytocin
- D. Progesterone
Explanation: Prolactin (lactogenic hormone) is the hormone that stimulates milk secretion in lactating women.
Correct answer: Prolactin- A. Testes
- B. Thyroid
- C. Pancreas
- D. Adrenal
Explanation: The thyroid gland secretes three hormones: thyroxine or tetraiodothyronine (T 4 ), triiodothyronine (T 3 ) and calcitonin.
Correct answer: Thyroid- A. Continue to respond to the hormone without any difference
- B. Not respond to the hormone
- C. Continue to respond to the hormone but will require higher concentration
- D. Continue to respond to the hormone but in the opposite way
Explanation: The molecules of hormones that are amino acid derivatives, peptides or proteins are large and insoluble in lipids, and cannot enter the…
Correct answer: Not respond to the hormone- A. LH
- B. FSH
- C. Progesterone
- D. Estradiol
Explanation: LH causes the ovulation and secretion of progesterone and oestrogen from ovarian follicles and corpus luteum.
Correct answer: LH- A. Sertoli cells
- B. Leydig's cells
- C. Oxyntic cells
- D. Pituitary gland
Explanation: Interstitial cells (or Leydig's cells) are the cells interspersed between the seminiferous tubules of the testis.
Correct answer: Leydig's cells- A. Enterogastrone
- B. Gastrin
- C. Pancreozymin
- D. Cholecystokinin
Explanation: Enterogastrone is secreted by the duodenal epithelium and it slows gastric contractions to delay its emptying and also stops the secretion…
Correct answer: Enterogastrone- A. Enzyme that hydrolyses peptides
- B. Hormone secreted by the pituitary that promotes reabsorption of water from the glomerular filtrate
- C. Hormone that promotes glycogenolysis
- D. Energy rich compound connected with muscle contraction
Explanation: ADH is also called vasopressin. It's a hormone made by the hypothalamus in the brain and stored in the posterior pituitary gland.
Correct answer: Hormone secreted by the pituitary that promotes reabsorption of water from the glomerular filtrate1178. Insulin is a
- A. Vitamin
- B. Lipid
- C. Hormone
- D. Enzyme
Explanation: Insulin is a peptide hormone, secreted by the b cells of the islets of Langerhans in the pancreas, that promotes the uptake of glucose by…
Correct answer: Hormone- A. keep them in larval stage
- B. Hasten their metamorphosis
- C. Slow down their metamorphosis
- D. kill the tadpoles
Explanation: In 1912, Gudernatsch discovered that metamorphosis in a frog's tadpole is increased by the thyroxine hormone which has iodine as the main…
Correct answer: Hasten their metamorphosis- A. Cortisol
- B. Calcitonin
- C. Oxytocin
- D. Aldosterone
Explanation: Insulin decreases the level of glucose in the blood while cortisol (secreted by the middle region of the adrenal cortex) increases the…
Correct answer: Cortisol