NEET Biology: Neural Control and Coordination — Practice Set 20

Q1. Which of the following statements about neurotransmitters is correct?

A. Neurotransmitters can be either excitatory or inhibitory.
B. All neurotransmitters have the same effect on all neurons.
C. Neurotransmitters pass through the postsynaptic membrane without binding to receptors.
D. Neurotransmitters are not involved in synaptic transmission.

Q2. Which of the following correctly describes an electrical synapse?

A. Neurons communicate using chemical messengers
B. Neurons are directly connected by gap junctions
C. Impulse transmission is slower compared to chemical synapses
D. Neurotransmitters cross the synaptic cleft

Q3. Which of the following statements about the parasympathetic nervous system is correct?

A. It is responsible for the "rest and digest" response.
B. It increases heart rate and dilates pupils.
C. It prepares the body for emergency situations.
D. It does not affect glandular secretions.

Q4. Which of the following statements about the sodium-potassium pump is incorrect?

A. It helps maintain the resting membrane potential.
B. It moves sodium (Na⁺) into the neuron and potassium (K⁺) out.
C. It requires ATP to function.
D. It plays a role in restoring the ionic balance after an action potential.

Q5. Which type of neuron is responsible for transmitting sensory information to the CNS?

A. Motor neuron
B. Interneuron
C. Afferent neuron
D. Efferent neuron

Q6. Which of the following statements about the brainstem is correct?

A. It consists of the midbrain, pons, and medulla oblongata.
B. It is responsible for higher cognitive functions like reasoning.
C. It controls only voluntary muscle movements.
D. It does not regulate heart rate and respiration.

Q7. Which part of the brain is responsible for the regulation of emotions such as fear and pleasure?

A. Cerebellum
B. Limbic system
C. Medulla oblongata
D. Thalamus

Q8. Which of the following statements about the sodium-potassium pump is incorrect?

A. It helps maintain the resting membrane potential.
B. It moves sodium (Na⁺) into the neuron and potassium (K⁺) out.
C. It requires ATP to function.
D. It plays a role in restoring the ionic balance after an action potential.

Q9. Which of the following statements about the corpus callosum is incorrect?

A. It connects the two cerebral hemispheres.
B. It facilitates communication between the left and right brain.
C. It is part of the brainstem.
D. It consists of a bundle of nerve fibers.

Q10. Which of the following is the function of the thalamus?

A. Regulating heart rate
B. Relaying sensory signals to the cerebrum
C. Controlling voluntary muscle movements
D. Secreting hormones

Biology — Neural Control and Coordination

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Which of the following statements about neurotransmitters is correct?

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