Test 2 Flashcards
True or false: Competitive binding only happens in the presynaptic neuron.
False
Which of the following would be classified as AGONIST effect for the neurotransmitter, ACh?
Blocking the reuptake of ACh and preventing degredation
True or false: If a drug prevents an autoreceptor from working properly, this will be an agonist effect.
True
Which of the following would be classified as AGONIST effect for the neurotransmitter, DA
Acting as a precursor for Da, stimulating a receptor, blocking an autoreceptor
True or false: If a drug and a neurotransmitter can bind to the same postsynaptic receptor at the same time, this is an example of noncompetitive binding.
True
Which of the following is involved in IPSPs in a neuron?
- Cl- coming into the cell via Cl- channels
- K+ leaving the cell via K+ channels
Which of the ions listed below is pushed out of the cell at rest because of diffusion?
K+
Which of the following is false regarding ions?
Ions can be either charged or uncharged, and Ions can be positively but not negatively charged.
You are a scientist and you discover a previously-unknown post-synaptic receptor. You notice that when a neurotransmitter binds to this new post-synaptic receptor, an ion channel opens immediately. Based on this information, you would classify this new post-synaptic receptor as a
Ionotropic receptor
You are a researcher studying ion channels in electric eels. One day you discover an ion channel. All you can discover about it is that it is closed at resting membrane potential, is opened by HYPERpolarization or increased NEGATIVE charge inside the cell, and that it allows a NEGATIVELY charged ion to enter the neuron. Based on what we learned in class, which of the following ion channels can this be?
It can be neither the Na+ nor the K+voltage-dependent channel
You are a psychiatrist and you give one of your patients a drug that inhibits reuptake of serotonin. Which of the following best describes what this drug would do?
It would prevent serotonin frombeing moved back into the presynaptic axon terminal by transporter proteins.
Which of the following best describes the process of degradation in termination of synaptic signaling?
It refers to the breakdown of neurotransmitters by enzymes in the synapse.
Which of the following is true about what sodium-potassium transporters ‘do’ in a neuron?
Intracellular sodium concentrations are kept low.
Which of the following is involved in EPSPs in a neuron (select all that apply)?
Na= ions and Na+ion channels
