Given below are two statements with respect to the neurotransmitter,dopamine.
Statement-$I$: Degeneration of dopamine-producing neurons causes Parkinson's disease.
Statement-$II$: Dopamine levels increase due to cocaine.
Choose the most appropriate answer from the options given below.

  • A
    Statement-$I$ is correct but Statement-$II$ is incorrect.
  • B
    Both Statement-$I$ and Statement-$II$ are incorrect.
  • C
    Both Statement-$I$ and Statement-$II$ are correct.
  • D
    Statement-$I$ is incorrect but Statement-$II$ is correct.

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Complete the statement by selecting the appropriate match among the following.
Column-$I$ Column-$II$
$(a)$ Resting potential $(i)$ Chemicals involved in the transmission of impulses at synapses.
$(b)$ Nerve impulse $(ii)$ Gap between the presynaptic and postsynaptic neurons.
$(c)$ Synaptic cleft $(iii)$ Electrical potential difference across the resting neural membrane.
$(d)$ Neurotransmitters $(iv)$ An electrical wave-like response of a neuron to a stimulation.

Match the following:
Column-$I$ Column-$II$
$(a)$ Unipolar neurons $(1)$ Amygdala and Hippocampus
$(b)$ Limbic system $(2)$ Centre for control of body temperature
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