The Postsynaptic Density
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Questions and Answers

Which type of receptors are connected to G proteins and can also be ion channels?

  • G protein-coupled receptors (correct)
  • Neurotransmitter receptors
  • Metabotropic receptors
  • Ionotropic receptors

Which neurotransmitter is the major excitatory neurotransmitter in the brain?

  • Dopamine
  • Serotonin
  • Glutamate (correct)
  • GABA

Which type of receptors are ligand-gated ion channels and composed of subunits with transmembrane domains?

  • Neurotransmitter receptors
  • Metabotropic receptors
  • Ionotropic receptors (correct)
  • G protein-coupled receptors

What type of receptors can trigger neuroplasticity and lead to increased connectivity and learning?

<p>Metabotropic receptors (C)</p> Signup and view all the answers

Which subunits are found in G proteins?

<p>Alpha, beta, and gamma (C)</p> Signup and view all the answers

What is the main function of G proteins in neuronal signaling?

<p>To activate second messenger systems (B)</p> Signup and view all the answers

What happens to neurons during neuronal plasticity?

<p>All of the above (D)</p> Signup and view all the answers

Which of the following is true about neurotransmitters and drugs?

<p>Antagonists block neurotransmitters (C)</p> Signup and view all the answers

What can happen if there are toxic levels of neurotransmitters in the body?

<p>Respiratory failure or inhibition of vital systems (D)</p> Signup and view all the answers

Which animals have been studied for their nervous systems?

<p>Squids and manatees (A)</p> Signup and view all the answers

What is the effect of GABA agonists on vital systems?

<p>Inhibition of vital systems (B)</p> Signup and view all the answers

What did the learning conference focus on?

<p>Comparative societies studying animal learning (A)</p> Signup and view all the answers

What is the cause of tetanus?

<p>Excessive excitation of neurons (D)</p> Signup and view all the answers

Which drugs affect neurotransmitter levels?

<p>Serotonin reuptake inhibitors and amphetamines (A)</p> Signup and view all the answers

What did Eric Kandel study in neuroscience?

<p>Sea slugs and squids (D)</p> Signup and view all the answers

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