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. Saltatory conduction
- B. Resting potential
- C. Synapses
- D. Membrane potential
Explanation: When a nerve impulse jumps from one node of Ranvier to the next in a myelinated neuron, it is called "saltatory conduction." In myelinated…
Correct answer: Saltatory conduction- A. Enzymes
- B. Chemoreceptors
- C. Neurotransmitters
- D. Hormones
Explanation: In the nervous system, chemical messengers that transmit signals between neurons or from neurons to other cells, such as muscle cells, are…
Correct answer: Neurotransmitters- A. Horrnones
- B. Channel and carrier proteins in the cell membrane of a neuron
- C. Enzymes
- D. Neurotransmitters
Explanation: Acetylcholine and norepinephrine (noradrenaline) are both types of neurotransmitters used in the nervous system.
Correct answer: Neurotransmitters- A. Choline
- B. Acetoldehyde
- C. Acetylcholine
- D. Phosphatidylcholine
Explanation: Acetylcholine is the main neurotransmitter for synapses that lie outside the central nervous system (CNS).
Correct answer: Acetylcholine- A. Glutamine
- B. Arginine
- C. Leucine
- D. Dopamine
Explanation: Dopamine is a well-known neurotransmitter that participates in various physiological processes, including reward, mood regulation, and…
Correct answer: Dopamine- A. Acetylcholine
- B. Dopamine
- C. Serotonin
- D. Both B and C
Explanation: Option D is correct.Yes, dopamine and serotonin neurotransmitters do affect sleep, mood, and learning.Dopamine is associated with feelings…
Correct answer: Both B and C- A. Cerebral cortex
- B. Amygdala
- C. Hypothalamus
- D. Cerebellum
Explanation: Option A is correct.The sense of hearing is concerned with the cerebral cortex.
Correct answer: Cerebral cortex- A. Thalamus
- B. Amygdala
- C. Cerebrum
- D. Pons
Explanation: Option B is correct. Amygdala is part of limbic system and it receives sensation for pleasure, punishment.
Correct answer: Amygdala1209. Lobe are present in:
- A. Hypothalamus
- B. Cerebrum
- C. Pons
- D. Amygdala
Explanation: Option B is correct. There are four lobes present in the cerebrum:>Frontal lobe>Parietal lobe>Temporal lobe>Occipital lobe
Correct answer: Cerebrum- A. Lateral ventricles
- B. Corpus callosum
- C. Subarachnoid space
- D. Central canal
Explanation: Option B is correct.Ccrebrospinal fluid is present between ventricles of brain and central canal of vertebral column.The cerebrospinal…
Correct answer: Corpus callosum- A. Sacrum
- B. Coccyx
- C. Dorsal root
- D. L1 or L2 vertebra
Explanation: Option D is correct.The spinal cord terminates at the level of the L1 or L2 vertebra in adults.
Correct answer: L1 or L2 vertebra- A. Schwann cells
- B. Neuron fibres
- C. Cell bodies of neuron
- D. Nissl's granules
Explanation: Option C is correct.Grey matter is composed of neuronal cell bodies, dendrites, and synapses.
Correct answer: Cell bodies of neuron- A. Produce CSF
- B. Produce hormones
- C. Communicate two hemispheres
- D. Communicate brain with rest of body
Explanation: Option D is correct.The spinal cord functions primarily in the transmission of nerve signals from the motor cortex to the body, and from…
Correct answer: Communicate brain with rest of body- A. Sympathetic nervous system
- B. Parasympathetic nervous system
- C. Both A and B
- D. None of these
Explanation: Option A is correct. The sympathetic nervous system is responsible for preparing the body for the "fight-or-flight" response.
Correct answer: Sympathetic nervous system- A. Cervical
- B. Lumbar
- C. Thoracic
- D. Pelvic
Explanation: Option A is correct.Yes, the vagus nerve arises from the cervical region of the spinal cord.
Correct answer: Cervical- A. Nerves
- B. Tracts
- C. Ganglia
- D. Nuclei
Explanation: Option B is correct.A bundle of axons or dendrites bounded by connective tissue inside the central nervous system (CNS) is called a tract.
Correct answer: Tracts- A. Ganglia
- B. Myelinated cell processes only
- C. Cell bodies and unmyelinated cell processes
- D. Cell bodies and myelinated cell processes
Explanation: Option C is correct.The gray matter of the spinal cord contains cell bodies and unmyelinated cell processes, but not all of them.
Correct answer: Cell bodies and unmyelinated cell processes- A. Endocrine secretion
- B. Initiate biochemical reaction
- C. Organic in nature
- D. Transported by blood
Explanation: Option B is correct.No, hormones do not initiate biochemical reactions.
Correct answer: Initiate biochemical reaction- A. Proteins hormones
- B. Steroids hormones
- C. Adenoid hormones
- D. Polypeptide hormones
Explanation: Option B is correct.Yes, cholesterol serves as a precursor of steroid hormones.
Correct answer: Steroids hormones- A. Endocrine system
- B. Nervous system
- C. Respiratory system
- D. Muscular system
Explanation: Option A is correct.The endocrine system transports hormones in the body.
Correct answer: Endocrine system