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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1081. The part of the brain which guides smooth and accurate motions and maintains body position is called
- A. Cerebrum
- B. Cerebellum
- C. Pons
- D. Medulla
Explanation: The cerebellum is located at the back of the head. Its function is to coordinate voluntary muscle movements, maintain postures, balance…
Correct answer: Cerebellum- 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. Addison's disease
- B. Parkinson's disease
- C. Cushing's disease
- D. Down's syndrome
Explanation: Cushing syndrome occurs when the level of cortisol is too high in the body.
Correct answer: Cushing's disease- A. Na+ into the axon and K+ out of the axon
- B. K+ into the axon and Na+ out of the axon
- C. Na+ and K+ within the axon toward the axon terminal
- D. None of the above
Explanation: When a neuron fiber is stimulated by a stimulus of adequate strength (threshold stimulus), the stimulated area of the fiber becomes…
Correct answer: None of the above- A. Adrenocorticotropic hormone
- B. Insulin and glucagon
- C. Epinephrine and norepinephrine
- D. Aldosterone
Explanation: Epinephrine and norepinephrine are the hormones behind your "fight-or-flight" response which involves increased heart rate and heavy…
Correct answer: Epinephrine and norepinephrine- A. Iron
- B. Zinc
- C. lodine
- D. Sodium
Explanation: Goiter is a condition in which the thyroid in neck enlarges, this happens mainly due to the lack of iodine in diet.
Correct answer: lodine- A. Balanced
- B. Only cytokinin required
- C. Low auxin, very high cytokinin
- D. Only auxin
Explanation: The ratio of auxin to cytokinin plays an important role in the effect of cytokinin on plant growth.
Correct answer: Low auxin, very high cytokinin1088. If medulla oblongata of a person brain is damaged which of the following process will be disturbed?
- A. Thinking
- B. Sleep
- C. Thirst
- D. Swallowing
Explanation: Medulla oblongata is the structure found in the human brain. The major function of Medulla oblongata is to control automatic function…
Correct answer: Swallowing1089. In which of the following disorders the structure and function of normal spinal cord is damaged?
- A. Arthritis
- B. Sciatica
- C. Spondylosis
- D. Disc slip
Explanation: When Osteoarthritis affects the spine, it is known as Spondylosis. Due to the change in the structure and function of the spinal cord the…
Correct answer: Spondylosis- A. Abscises acid
- B. Cytokinin
- C. Ethylene
- D. Gibberellic acid.
Explanation: Ethylene is a colorless flammable gaseous unsaturated hydrocarbon C2H4 and occurs in plants functioning especially as a natural growth…
Correct answer: Ethylene- A. Muscular disorders
- B. Vascular disorders
- C. Functional disorders
- D. All of these
Explanation: Vascular diseases affect the circulatory system since the question states they are caused by a disturbance of blood supply.
Correct answer: Vascular disorders- A. Astrocytes and Schwann cells
- B. Oligodendrocytes and osteoclasts
- C. Osteoclasts and astrocytes
- D. Schwann cells and oligodendrocytes.
Explanation: Schwann cells and oligodendrocytes form myelin sheath around the axon. Myelin sheath serves as an insulating layer, preventing loss of…
Correct answer: Schwann cells and oligodendrocytes.- A. Cerebellum
- B. Cerebrum
- C. Hypothalamus
- D. Medulla obloganta
Explanation: Hypothalamus is the thermoregulatory center of the body. It keeps body temperature at 37°C by means of a complex thermostat system.
Correct answer: Hypothalamus- A. Neurilemma is discontinuous.
- B. Myelin sheath is discontinuous.
- C. Both neurilemma and myelin sheath are discontinuous.
- D. It is covered by the myelin sheath.
Explanation: At the level of the node of Ranvier, the myelin sheath is discontinuous but not the neurilemma lining.
Correct answer: Myelin sheath is discontinuous.- A. Tetany
- B. Anaemia
- C. Angina pectoris
- D. Gout
Explanation: Tetany is a spasm and twitching of the muscles, particularly those of the face, hands, and feet.
Correct answer: Tetany- A. Diencephalon
- B. Medulla oblongata
- C. Cerebellum
- D. Spinal cord
Explanation: (b) : The respiratory centre is the medulla oblongata, that regulates the rate and depth of breathing.
Correct answer: Medulla oblongata- A. Sensory end plate
- B. Synapse end plate
- C. Motor end plate
- D. Postsynaptic membrane
Explanation: The site where terminal branches of the axon of a motor neuron form a synapse with the target muscle cell is called the motor end…
Correct answer: Motor end plate- A. Constriction of bronchi
- B. Decrease in heart rate
- C. Promotes digestion or peristalsis
- D. Dilates the pupil
Explanation: The sympathetic nervous system activates during flight or fight conditions.
Correct answer: Dilates the pupil- A. OPTION A
- B. OPTION B
- C. OPTION C
- D. OPTION D
Explanation: Iodine is required for production of thyroxine, thus lack of iodine results in hyposecretion of thyroxine.
Correct answer: OPTION A- A. Presynaptic membrane
- B. Tips of axons
- C. Postsynaptic membrane
- D. Membranes of synaptic vesicles
Explanation: A neurotransmitter is a chemical substance responsible for the transmission of nerve impulses across a synapse.
Correct answer: Postsynaptic membrane