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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1,687 questions · page 26 of 85
- A. Glucagon and Cortisol
- B. Insulin and Adrenalin
- C. Glucagon and insulin
- D. Glucagon and Adrenalin
Explanation: Glucagon and insulin are hormones that work in tandem to regulate blood sugar levels, rather than acting as direct antagonists.
Correct answer: Glucagon and insulin- A. Thyroxine
- B. Prolactin
- C. Aldosterone
- D. Insulin
Explanation: Prolactin levels increase in breastfeeding mothers due to the hormone's role in milk production.
Correct answer: Prolactin- A. Faster
- B. On fewer cells
- C. For a shorter period of time
- D. Over longer distances
Explanation: Hormones typically act for shorter periods of time compared to neurotransmitters due to their mode of transportation and action.
Correct answer: For a shorter period of time- A. Amino acids
- B. Modified amino acids
- C. Steroid
- D. All of the choices are correct
Explanation: Hormones are not made of amino acids because they are typically derived from lipids or amino acids are modified to create them.Hormones…
Correct answer: All of the choices are correct- A. Melatonin
- B. Cortisol
- C. Glucagon
- D. Adrenalin
Explanation: As sunlight increases, melatonin production decreases, signaling wakefulness.
Correct answer: Melatonin- A. Insulin
- B. Adrenalin
- C. Calcitonin
- D. Prolactin
Explanation: Adrenaline controls the fight-or-flight response due to its rapid and potent effects on the body.
Correct answer: Adrenalin- A. Insulin and glucagon
- B. ADH and oxytocin
- C. Growth hormone and prolactin
- D. Thymosin and adrenalin
Explanation: ADH and oxytocin are synthesized in the hypothalamus and transported down axons to the posterior pituitary for release.
Correct answer: ADH and oxytocin- A. STHRRH
- B. TRH
- C. CRH
- D. ACTH
Explanation: Corticotropin-releasing hormone (CRH) from the hypothalamus stimulates the release of adrenocorticotropic hormone (ACTH) from the anterior…
Correct answer: CRH- A. Blood sugar
- B. Blood calcium
- C. Metabolism
- D. Anti-inflammatory reactions
Explanation: Thyroxine, or thyroid hormone, travels through the bloodstream to increase metabolism by binding to receptors on target cells in various…
Correct answer: Metabolism- A. Pancreas
- B. Thyroid
- C. Liver
- D. Adrenal
Explanation: Adrenocorticotropic hormone (ACTH) primarily targets the adrenal cortex, adrenaline.
Correct answer: Adrenal- A. Increased blood pressure
- B. Increased blood calcium
- C. Decreased body temperature
- D. Decreased metabolism
Explanation: Hyperglycemia increases blood pressure by promoting fluid retention and impairing blood vessel function, leading to increased vascular…
Correct answer: Increased blood pressure- A. ADH
- B. PTH
- C. STH
- D. GnRH
Explanation: Deficiency of somatotropin hormone (STH), also known as growth hormone (GH), can result in stunted growth and development, known as…
Correct answer: STH- A. Thyroxin
- B. PTH
- C. STH
- D. GnRH
Explanation: Yes, an increase in thyroxine (thyroid hormone) levels can lead to an elevation in body temperature.
Correct answer: Thyroxin- A. Steroid hormones
- B. Water-soluble hormones
- C. Peptide hormones
- D. Second messengers
Explanation: Steroid hormones are derived from cholesterol and are lipid-soluble molecules.
Correct answer: Steroid hormones- A. Human growth hormone (GH)
- B. Follicle-stimulating hormone (FSH)
- C. Parathyroid hormone (PTH)
- D. Thyroid-stimulating hormone (TSH)
Explanation: PTH is not produced by the anterior pituitary gland. Instead, it is produced by the parathyroid glands, which are located adjacent to the…
Correct answer: Parathyroid hormone (PTH)- A. Thyroid
- B. Thymus
- C. Pancreas
- D. Pituitary
Explanation: The pancreas has both endocrine and exocrine functions. Endocrine cells in the pancreas, specifically the Islets of Langerhans, produce…
Correct answer: Pancreas- A. Addison disease
- B. Cretinism
- C. Cushing syndrome
- D. Diabetes insipidus
Explanation: Excess cortisol, whether due to adrenal gland overproduction or prolonged use of corticosteroid medications, causes Cushing syndrome.
Correct answer: Cushing syndrome- A. Cortisol
- B. Melatonin
- C. Thyroxin
- D. Thymosin
Explanation: Thymosin is the correct answer. It is a hormone secreted by the thymus gland, which is crucial for the differentiation and maturation of…
Correct answer: Thymosin- A. Cretinism
- B. Myxedema
- C. Addison disease
- D. Huntington disease
Explanation: This is a term used to describe severe hypothyroidism, which occurs when the thyroid gland does not produce enough thyroid hormone.
Correct answer: Myxedema- A. Etiology
- B. Psychology
- C. Ethology
- D. Parapsychology
Explanation: Ethology is the correct answer. It is the scientific study of animal behavior, particularly in natural environments.
Correct answer: Ethology