The human brain works through a complex system of chemical and electrical signaling, allowing neurons to communicate with each other.
Contents
MCQs
1. Neurons in the brain communicate through:
a) Direct physical contact
b) Smoke signals
c) Synapses
d) Morse code
Answer: c) Synapses
Explanation: Neurons communicate with each other through synapses, where chemical or electrical messages are sent across a gap between neurons.
2. The basic working unit of the brain is the:
a) Atom
b) Cell
c) Neuron
d) Muscle fiber
Answer: c) Neuron
Explanation: Neurons are the fundamental working units of the brain, responsible for sending and receiving signals throughout the nervous system.
3. Brain activity is primarily monitored through:
a) Blood tests
b) X-rays
c) Electroencephalography (EEG)
d) Ultrasound
Answer: c) Electroencephalography (EEG)
Explanation: EEG is a method used to monitor brain activity by recording electrical activity along the scalp, providing insights into the brain’s functioning.
4. The process by which neurons create electrical signals is known as:
a) Photosynthesis
b) Electrolysis
c) Action potential
d) Hydrolysis
Answer: c) Action potential
Explanation: Action potential is the process by which neurons generate electrical signals, crucial for the transmission of information throughout the nervous system.
5. The brain’s ability to change and adapt in response to new experiences is called:
a) Plasticity
b) Rigidity
c) Elasticity
d) Brittleness
Answer: a) Plasticity
Explanation: Brain plasticity, or neuroplasticity, refers to the brain’s ability to reorganize itself by forming new neural connections, allowing it to adapt to different experiences.
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