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. Neurohormone
- B. Neurotransmitter
- C. Hormone
- D. Pheromone
Explanation: Acetylcholine is an excitatory neurotransmitter.
Correct answer: Neurotransmitter- A. Body temperature
- B. Maintaining Blood water potential
- C. Maintaining urine osmolarity
- D. Circadian rhythms
Explanation: The hypothalamus is the control centre for the regulation of blood water potential and urine osmolarity, mainly via the hormone ADH…
Correct answer: Circadian rhythms- A. Kinesis
- B. Imprinting
- C. Habituation
- D. Insight learning
Explanation: Kinesis is the movement of organisms towards or away from a strong stimulus, i.e., a flame or a projectile.
Correct answer: Kinesis- A. Secretion of insulin by the pancreas in response to increased blood glucose concentration
- B. Secretion of oxytocin in response to dilation of the cervix during childbirth
- C. Secretion of glucagon by pancreas in response to decreased blood glucose concentration
- D. All of the above
Explanation: Options A and C are examples of negative feedback. In option A, when blood sugar rises, receptors in the body sense a change.
Correct answer: Secretion of oxytocin in response to dilation of the cervix during childbirth685. When cocaine is used as a stimulant, it interferes with the CNS at the reuptake of which hormone?
- A. Testosterone
- B. Dopamine
- C. Serotonin
- D. Adrenaline
Explanation: Cocaine is a natural stimulant. Stimulants are drugs that stimulate the nervous system and increase alertness and excitement.
Correct answer: Dopamine- A. Peripheral nervous system
- B. Central nervous system
- C. Autonomic nervous system
- D. None of the above
Explanation: The peripheral nervous system (PNS) is the part of the nervous system that consists of the nerves and ganglia outside of the brain and…
Correct answer: Peripheral nervous system- A. Benign
- B. Malign
- C. Ganglion
- D. Neuroglia
Explanation: Ganglia is the plural of the word ganglion. Ganglia are clusters of nerve cell bodies found throughout the body.
Correct answer: Ganglion- A. Motor neuron
- B. Effector
- C. Brain
- D. Spinal cord
Explanation: Reflexes occur without conscious thinking or planning, meaning the brain is not involved in them.
Correct answer: Brain- A. Sodium pumps
- B. Potassium pumps
- C. Calcium pumps
- D. Both a and b
Explanation: Resting membrane potentials are maintained by two different types of ion channels: the sodium-potassium pump and the sodium and potassium…
Correct answer: Both a and b- A. Hypothalamus
- B. Thalamus
- C. Cerebellum
- D. Cerebral cortex
Explanation: The cerebrum is part of the forebrain, and under the cerebrum lies the cerebellum, which is part of the hindbrain.
Correct answer: Cerebellum- A. Acetylcholine
- B. Acetaldehyde
- C. Choline
- D. Phosphatidylcholine
Explanation: Acetylcholine is a neurotransmitter that is used in transmission across synapses within both the central nervous system and the peripheral…
Correct answer: Acetylcholine- A. Enzymes
- B. Channel and carrier proteins in the cell membrane of a neuron
- C. Neurotransmitters
- D. Hormones
Explanation: Factual recall: Both of these substances are neurotransmitters and not any of the things mentioned in the other options.
Correct answer: Neurotransmitters- A. Androgens
- B. Pyrogens
- C. Pepsin
- D. Prions
Explanation: Substances responsible for increasing the set point of the hypothalamus are called pyrogens.
Correct answer: Pyrogens- A. Upper arms
- B. Legs
- C. Eyes
- D. Heart
Explanation: A single motor neuron may innervate as few as 3-5 fibers in the muscles of 'eyes.
Correct answer: Eyes- A. Monosynaptic reflex
- B. Polysynaptic reflex
- C. Hemi Synaptic Reflex
- D. None of these
Explanation: Most reflex arcs are "b) Polysynaptic reflex." A polysynaptic reflex involves multiple synapses and interneurons between the sensory…
Correct answer: Polysynaptic reflex- A. White matter
- B. Gray matter
- C. Medulla Oblongata
- D. All A, B and C
Explanation: White matter consists of myelinated nerve fibers, which act like the "wires" that transmit signals between different parts of the brain…
Correct answer: White matter- A. Axons
- B. Synapse
- C. Neuron somas
- D. None of these
Explanation: Gray matter is primarily composed of "Neuron somas" or cell bodies. In the nervous system, gray matter refers to the regions of the brain…
Correct answer: Neuron somas- A. Acromegaly
- B. Diabetes mellitus
- C. Dwarfism
- D. Diabetes insipidus
Explanation: A lack of vasopressin (ADH) causes diabetes insipidus, a condition marked by excessive production of dilute urine and intense thirst.
Correct answer: Diabetes insipidus- A. Red
- B. Blue
- C. Green
- D. White
Explanation: Certain light spectrums trigger growth characteristics in plants. In general, 'blue light' spectrums encourage vegetative and structural…
Correct answer: Red- A. Cerebellum
- B. Cerebrum
- C. Medulla
- D. Pons
Explanation: The cerebellum is important in coordinating the movements of the body. The cerebellum guides smooth and accurate motions and maintains…
Correct answer: Cerebellum