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 52 of 85
- A. Calcium ions
- B. Chloride ions
- C. Potassium ions
- D. Sodium ions
Explanation: Diffusion of sodium ions (Na⁺) across the postsynaptic membrane causes it to depolarize.
Correct answer: Sodium ions- A. Brain
- B. Motor neuron
- C. Sensory neuron
- D. Spinal cord
Explanation: This simple reflex circuit includes each of the four elements of a neural pathway.
Correct answer: Brain- A. Amygdala
- B. Cerebellum
- C. Hippocampus
- D. Medulla oblongata
Explanation: The cerebellum is the "little brain" located at the back of the head, below the cerebrum.
Correct answer: Cerebellum- A. Acetylcholine
- B. Adrenaline
- C. Serotonin
- D. Glutamate
Explanation: Monoamine oxidase (MAO) is an enzyme that breaks down neurotransmitters, including adrenaline (epinephrine), in the body.
Correct answer: Adrenaline- A. Bipolar
- B. Multipolar
- C. Pseudo unipolar
- D. Unipolar
Explanation: A multipolar neuron is the most common type of neuron, characterized by one axon and multiple dendrites extending from the cell body.
Correct answer: Multipolar- A. Thalamus
- B. Cerebrum
- C. Hypothalamus
- D. Cerebellum
Explanation: Thalamus is mass of grey matter located at the base of cerebrum in the wall of third ventricle.
Correct answer: Thalamus- A. I, III, II, and IV
- B. I, IV, II and III
- C. IV, I, III and II
- D. IV, III, I and II
- E. II, I, IV and III
Explanation: The sequence of transmission of nerve impulse is as follows:1.Depolarisation occurs at the presynaptic terminal.2.This leads to the…
Correct answer: I, IV, II and III- A. Gastrin
- B. Secretin
- C. Insulin
- D. Glucagon
Explanation: Secretin is a hormone that regulates water homeostasis throughout the body and influences the environment of the duodenum by regulating…
Correct answer: Secretin- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: In resting membrane outside is positively charged while inside is negatively charged.
Correct answer: Option A- A. Epinephrine
- B. Serotonin
- C. Dopamine
- D. Endorphins
Explanation: Neurotransmitters are chemical messengers that transmit a message from a nerve cell across the synapse to a target cell.
Correct answer: Endorphins- A. Axons
- B. Dendrites
- C. Myelin sheath
- D. Schwann cell
Explanation: The long thin processes that transmit neural impulses from one part to the other are called axons. Hence, Option A is correct.
Correct answer: Axons- A. Option A
- B. Option B
- C. Option C
- D. Option D
- E. Option E
Explanation: nerve impulse → release of acetylcholine→ end plate potential → action potential produced in muscle fibre → calcium ions released from…
Correct answer: Option A- A. 25cm
- B. Less than 25 cm
- C. More than 25 cm
- D. Infinity
Explanation: The closest distance we can see with our eye is 25 cm. This is called the least distance of distinct vision which is the closest distance…
Correct answer: More than 25 cm- A. TSH
- B. Oxytocin
- C. ACTH
- D. FSH
- E. GH
Explanation: Option A: TSH (thyroid-stimulating hormone) is released by the anterior pituitary gland in response to a releasing factor called…
Correct answer: Oxytocin- A. Adrenaline
- B. Thyroxine
- C. Oxytocin
- D. Parathormone
Explanation: The most common cause of goitres worldwide is a lack of iodine in the diet.
Correct answer: Thyroxine- 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 plate.
Correct answer: Motor end plate- A. Secretion of insulin by pancreas in response to increased blood glucose concentration.
- B. Secretion of oxytocin in response to dilation of cervix during childbirth.
- C. Secretion of glucagon by pancreas in response to decreased blood glucose concentration
- D. All of the above
Explanation: Option 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 cervix during childbirth.- A. Peripheral nervous system
- B. Central nervous system
- C. Autonomous 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. Brain. receptors, spinal cord
- B. Receptors, neurons, brain
- C. Receptors, effectors and spinal cord
- D. Receptors and effectors
Explanation: The simplest arrangement of a reflex are consists of the receptors, an interneuron, and an effector; together these units from a…
Correct answer: Receptors, effectors and spinal cord- 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