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. Inside the plasma membrane has a negative energy compared to the outside
- B. Inside of the plasma membrane has a positive energy compared to the outside
- C. Inside the plasma membrane has the same energy compared to the outside
- D. Positive charge moves inside the neuron
Explanation: Neurons are said to be polarized when there is a difference in electrical potential between the inside and outside of the plasma membrane.
Correct answer: Inside the plasma membrane has a negative energy compared to the outside- A. Thalamus
- B. Hippocampus
- C. Hypothalamus
- D. Amygdala
Explanation: The hippocampus is a structure in the temporal lobe that plays a critical role in the formation and consolidation of long-term memories…
Correct answer: Hippocampus- A. Thinking and reasoning
- B. Balancing during active movement
- C. Temperature regulation
- D. Initiation of muscular contraction
Explanation: The cerebellum is a region in the hindbrain that plays a crucial role in motor coordination, balance, and learning new motor skills.
Correct answer: Balancing during active movement- A. Aldosterone
- B. Thyroxine
- C. Corticosterone
- D. Vasopressin
Explanation: Vasopressin is secreted by the hypothalamus and stored in the posterior pituitary, making it a neurohormone.
Correct answer: Vasopressin- A. Pia and dura mater
- B. Dura and arachnoid mater
- C. Arachnoid and pia mater
- D. Cranium and dura mater
Explanation: CSF is located in the subarachnoid space between these two layers. Acts as a cushion, shock absorber, and waste removal system for the…
Correct answer: Arachnoid and pia mater966. The butterfly-shaped central part of the spinal cord is composed of a special structure known as:
- A. Grey Matter
- B. White Matter
- C. Both A and B
- D. Neuroglial Protein
Explanation: The central, butterfly-shaped part of the spinal cord is the grey matter, which is primarily composed of neuron cell bodies, dendrites…
Correct answer: Grey Matter- A. Follicle-stimulating hormone
- B. Progesterone
- C. Luteinizing hormone
- D. Oxytocin
Explanation: Oxytocin is a hormone produced by the hypothalamus and released by the pituitary gland that plays a key role in social bonding…
Correct answer: Oxytocin- A. Electromechanical Waves
- B. Electromagnetic Waves
- C. Electromechno Waves
- D. Electrochemical Waves
Explanation: Nerve impulses are electrochemical because they involve both electrical and chemical changes.
Correct answer: Electrochemical Waves- A. Cerebellum
- B. Cerebrum
- C. Hypothalamus
- D. Thalamus
Explanation: Hypothalamus - Correct. The infundibulum is a stalk that connects the pituitary gland to the hypothalamus, allowing hormonal regulation.
Correct answer: Hypothalamus- A. Polarization
- B. Depolarization
- C. Repolarization
- D. Hyperpolarization
Explanation: When an action potential begins, sodium ions rush in, making the inside of the neuron less negative, which is called depolarization.
Correct answer: Depolarization- A. Negative feed back
- B. Neutral condition
- C. Positive feed back
- D. Static state
- E. Thermal state
Explanation: Negative feedback is a regulatory mechanism that works to counteract or reduce the effects of a stimulus, restoring the system to its…
Correct answer: Negative feed back- A. Auxin
- B. Gibberellin
- C. Cytokinin
- D. Ethene
- E. Abscisic acid
Explanation: The correct answer is A Auxin. Apical dominance is a phenomenon in plants where the growth and development of the main apical bud at the…
Correct answer: Auxin- A. Pituitary gland
- B. Thyroid gland
- C. Adrenal gland
- D. Master gland
- E. Hypothalamus
Explanation: The correct answer is Hypothalamus, referring to option E. The hypothalamus is a region of the brain found in vertebrates.
Correct answer: Hypothalamus- A. Hind brain
- B. Cortex
- C. Spinal cord
- D. Mid brain
- E. Medulla oblongata
Explanation: The cortex plays a crucial role in various conscious activities such as perception, attention, memory, language, reasoning…
Correct answer: Cortex- A. Baroreceptors
- B. Chemoreceptor
- C. Photoreceptor
- D. Noiceceptor
- E. Mechanoreceptor
Explanation: Nociceptors, also known as pain receptors, are specialized sensory receptors that detect pain and tissue damage.
Correct answer: Noiceceptor- A. Thickness
- B. Length
- C. Terminal portions
- D. None of the above
Explanation: The main difference between dendrites and axons lies in their terminal portions.
Correct answer: Terminal portions- A. Acetylcholine
- B. Dopamine
- C. Glutamate
- D. Serotonin
Explanation: Acetylcholine is a neurotransmitter that is active both in the central nervous system (CNS) and outside the CNS.
Correct answer: Acetylcholine- A. Estrogen
- B. Oxytocin
- C. Prolactin
- D. Secretin
Explanation: Oxytocin is a hormone that plays a major role in social bonding, childbirth, milk ejection, and sexual reproduction.
Correct answer: Oxytocin- A. Follicle-Stimulating Hormone (FSH)
- B. Luteinizing Hormone (LH)
- C. Progesterone
- D. Testosterone
Explanation: Progesterone is a hormone produced by the corpus leuteum in the ovaries during the menstrual cycle and by the placenta during pregnancy.
Correct answer: Progesterone- A. Arachnoid mater
- B. Pia mater
- C. Dura mater
- D. Cranium
Explanation: The arachnoid mater is the middle layer of the meninges. It is a thin and delicate membrane that lies between the dura mater (outer layer)…
Correct answer: Arachnoid mater