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. Cerebrum
- B. Cerebellum
- C. Pons
- D. Medulla
Explanation: The cerebellum is located at the back of the brain, beneath the cerebrum.
Correct answer: Cerebellum- A. -30 millivolts
- B. -50 millivolts
- C. -70 millivolts
- D. -100 millivolts
Explanation: This option is the correct answer. The resting membrane potential of a typical neuron is approximately -70 millivolts.
Correct answer: -70 millivolts- A. 6
- B. 12
- C. 14
- D. 31
Explanation: The peripheral nervous system consists of the nerves that branch out from the brain and spinal cord.
Correct answer: 12- A. Growth hormone
- B. Antidiuretic hormone
- C. Oxytocin
- D. Follicle stimulating hormone
Explanation: Lactation is the process of producing breast milk. Hormones signal the mammary glands in our body to start producing milk to feed the baby.
Correct answer: Oxytocin- A. Sensory neuron
- B. Motor neuron
- C. Intermediate neuron
- D. Associative neuron
Explanation: Neurons (or nerve cells) are specialised cells that transmit and receive electrical signals in the body.
Correct answer: Sensory neuron- A. Genetic messengers
- B. Physical messengers
- C. Chemical messengers
- D. Biological catalyst
Explanation: A chemical messenger is a molecule or compound that helps in the passage of information from one cell to another cell.
Correct answer: Chemical messengers- A. Anterior gland
- B. Posterior gland
- C. Intermediate gland
- D. Anterior-posterior gland
Explanation: The pituitary gland is sometimes called the master gland of the endocrine system.
Correct answer: Anterior gland- A. 1mm diameter neuron, lacking myelin
- B. 1mm diameter neuron, with myelin
- C. 2mm diameter neuron, lacking myelin
- D. 2mm diameter neuron with myelin
Explanation: The action potential is an electric impulse, and the speed of a nerve impulse is directly related to its diameter.
Correct answer: 2mm diameter neuron with myelin- A. Regulates hunger
- B. Regulate sleep
- C. Regulate water balance
- D. Store long time memory
Explanation: The hypothalamus functions as the body's main control center for maintaining internal balance, or homeostasis, and connects the nervous…
Correct answer: Store long time memory- A. Oxytocin
- B. TSH
- C. ACTH
- D. FSH
Explanation: Options B, C, and D are all incorrect because these hormones are produced and secreted from the anterior pituitary.
Correct answer: Oxytocin991. In neurons, the message is transmitted across synapses in the form of a chemical messenger called _.
- A. Communication
- B. Neurotransmitter
- C. Nerve impulse
- D. Nocireceptor
Explanation: A neurotransmitter is a signaling molecule secreted by a neuron to affect another cell across a synapse.
Correct answer: Neurotransmitter- A. Synapsis
- B. Synapse
- C. Collapse
- D. Synaptic knob
Explanation: The places where neurons connect and communicate with each other, and have a microscopic gap, are called synapses.
Correct answer: Synapse- A. Ventral root ganglion
- B. Grey matter of spinal cord
- C. White matter of spinal cord
- D. Dorsal root ganglion
Explanation: The cell body of the spinal sensory afferent is in the dorsal root ganglion (the cranial equivalent is the nucleus of the cranial nerve).
Correct answer: Dorsal root ganglion- A. Amygdala
- B. Hippocampus
- C. Thalamus
- D. Hypothalamus
Explanation: The amygdala is the part of the brain that is involved with emotions and feelings.
Correct answer: Amygdala- A. Glyoxysome
- B. Peroxisomes
- C. Golgi bodies
- D. Endoplasmic Reticulum
Explanation: The Golgi Apparatus produces secretions of various substances, so it is also involved in secreting neurotransmitters.
Correct answer: Golgi bodies- A. Reflex action of nerve impulse
- B. Reflex action of glands
- C. Reflex arc and reflex action
- D. Reflex arc
Explanation: During an involuntary action, a nerve impulse is passed through a pathway called the reflex arc. So, option D is correct.
Correct answer: Reflex arc- A. Dendrites
- B. Myelinated axons
- C. Cell bodies
- D. Unmyelinated axons
Explanation: White matter in the nervous system is primarily composed of myelinated axons, which are long projections of neurons covered with a fatty…
Correct answer: Myelinated axons- A. STH (Somatotrophic Hormone)
- B. TSH (Thyroid Stimulating Hormone)
- C. ICSH (Interstitial Cell Stimulating Hormone)
- D. FSH (Follicle Stimulating Hormone)
Explanation: Acromegaly is caused by the oversecretion of somatotropic hormone (STH), which is produced by the anterior pituitary gland.
Correct answer: STH (Somatotrophic Hormone)- A. Thermoreceptor
- B. Nociceptors
- C. Chemoreceptors
- D. Photoreceptors
Explanation: Thermoreceptors detect a temperature change. Chemoreceptors detect changes in chemicals. Nociceptors detect pain.
Correct answer: Nociceptors1000. Stimuli such as pressure, touch, stretch, and motion stimulate which of the following receptors?
- A. Thermoreceptors
- B. Mechanoreceptors
- C. Gustatory receptors
- D. Olfactory receptors
Explanation: Mechanoreceptors are sensory receptors that respond to mechanical stimuli, such as pressure, touch, vibration, and stretch.
Correct answer: Mechanoreceptors