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.
Last updated
1,687 questions · page 69 of 85
- A. Protein
- B. Insulin
- C. Estrogen
- D. Progesterone
Explanation: Cortisol bring about an increase in blood glucose level by breakdown of proteins. This process is known as gluconeogenesis.
Correct answer: Protein1362. Primary hormone is:
- A. STH
- B. FSH
- C. LH
- D. Prolactin
Explanation: Prolactin is indeed a primary hormone, meaning it is directly secreted by the anterior pituitary gland and acts directly on its target…
Correct answer: Prolactin- A. ICSH
- B. LH
- C. FSH
- D. Prolactin
Explanation: Prolactin: Prolactin is not a gonadotrophic hormone. It is also produced and released by the anterior pituitary gland.
Correct answer: Prolactin- A. Graafian follicle
- B. Adrenal cortex
- C. Adrenal medulla
- D. None
Explanation: Adrenal cortex is present on kidneys, and it produces androgen (testosterone) in females, along with cortisol and aldosterone in both…
Correct answer: Adrenal cortex- A. LH
- B. Estrogen
- C. FSH
- D. ICSH
Explanation: Yes, estrogen plays a crucial role in the menstrual cycle by causing the thickening and vascularization (formation of blood vessels) of…
Correct answer: Estrogen- A. Glucagon
- B. Glucose
- C. Glucocorticoid
- D. All of these
Explanation: Insulin, a hormone produced by the beta cells of the pancreas, plays a central role in glucose metabolism and homeostasis.
Correct answer: Glucose- A. Brittle bones
- B. Soft bones
- C. Rickets
- D. Tetany
Explanation: Deficiency of parathormone, also known as hypoparathyroidism, leads to decreased blood calcium levels (hypocalcemia).
Correct answer: Tetany- A. Hyperglycemia
- B. Hypercalcemia
- C. Hypoglycemia
- D. Hypocalcemia
Explanation: Yes, tetany is most commonly caused by hypocalcemia, which is a lower-than-normal level of calcium in the blood.
Correct answer: Hypocalcemia- A. Hypothalamus
- B. Progesterone
- C. Thalamus
- D. Estrogen
Explanation: The placenta is an organ that develops in the uterus during pregnancy. Progesterone, known as the "pregnancy hormone," is crucial for the…
Correct answer: Progesterone- A. Cushing syndrome
- B. Addison's disease
- C. Dwarfism
- D. Cretinism
Explanation: Addison's disease is caused by a deficiency of adrenal cortex hormones, particularly cortisol and aldosterone, leading to symptoms like…
Correct answer: Addison's disease- A. Hyperthyroidism
- B. Hypothyroidism
- C. Both A & B
- D. None of the above
Explanation: Goiter develops in both. In hyperthyroidism it is developed as exophthalmic goiter, and in hypothyroidism it is developed as goiter.
Correct answer: Both A & B- A. Breakdown of nucleic acids
- B. Breakdown of vitamins
- C. Breakdown of proteins
- D. Breakdown of carbohydrate
Explanation: Thyroid hormones stimulate metabolism by accelerating the rate at which cells convert carbohydrates into energy, thereby increasing the…
Correct answer: Breakdown of carbohydrate- A. Increase in calcium levels
- B. Increase in vitamin B12
- C. Decrease in calcium levels
- D. Decrease in vitamin B12
Explanation: Decreased production of parathyroid hormone (PTH) from the parathyroid glands leads to reduced calcium reabsorption from the kidneys and…
Correct answer: Decrease in calcium levels- A. Progesterone
- B. Estrogen
- C. Human placental lactogen
- D. LH
Explanation: No, the placenta does not secrete luteinizing hormone (LH). LH is produced by the anterior pituitary gland.
Correct answer: LH1375. FSH is released from:
- A. Pituitary gland
- B. Hypothalamus
- C. Brain
- D. Blood
Explanation: Yes, Follicle-Stimulating Hormone (FSH) is released from the anterior lobe of the pituitary gland.
Correct answer: Pituitary gland- A. In the medulla oblongata
- B. In the mediastinum of the upper thorax
- C. Both A & B
- D. None
Explanation: Yes, the thymus gland is located in the mediastinum, which is the central compartment of the thoracic cavity.
Correct answer: In the mediastinum of the upper thorax- A. Pancreas
- B. Pituitary
- C. Thyroid
- D. Thymus
Explanation: Yes, the thyroid gland is often considered the largest endocrine gland in the body by mass.
Correct answer: Thyroid- A. Higher Animals
- B. Smaller animals
- C. Simpler animals
- D. Lowest animals
Explanation: Reflex actions are the simplest form of response and are commonly observed in "c) Simpler animals." These responses are rapid, automatic…
Correct answer: Simpler animals- A. Corpus callosum
- B. Pons
- C. Vermis
- D. Spinal cord
Explanation: The part of the nervous system responsible for controlling reflex actions is the "Spinal cord." Reflex actions are rapid, involuntary…
Correct answer: Spinal cord1380. Reflex arc comprises of:
- A. Motor nerve
- B. Sensory nerve
- C. Both Aand B
- D. Mixed nerve
Explanation: Each sensory neuron conveys a signal, from a sensory receptor to a motor neuron, which in turn sending signals to an effector the result…
Correct answer: Both Aand B