Dopamine is a major neurotransmitter in the mammalian brain that regulates mood, cognition and locomotion. Which of the following are true about dopamine signaling in the synapse? Select all that apply. Presynaptic nerve cell Dendrites -Axon Nerve impulse Myelin sheath Nerve impulse Neuro- transmitter Synapse Postsynaptic nerve cell Postsynaptic receptors Dopamine receptors are localized in the presynaptic membrane Action potential in presynaptic axon terminal results in the opening of chloride channels Dopamine receptors are localized in the postsynaptic membrane Action potential in presynaptic axon terminal results in the opening of calcium channels

Q: Each of the following contributes to the unidirectional propagation of nerve signals EXCEPT_ A)…

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Q: Postsynaptic receptors include all the following types, except :-a- G-protein coupled receptorsb-…

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Q: The opening of axonal voltage-gated K+ channels is responsible for which part of the action…

A: Theses channels locate in cell membranes and control transportation of K +ions efflux from and…

Q: Which of the following describe(s) the difference(s) between an EPSP and an IPSP? Select all that…

A: The synaptic junction can be excitatory or inhibitory in nature depending upon the release of which…

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Q: Draw a chain of two neurons that synapse on one another in sequence. Label the presynaptic and…

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A: Action potential the action potential is defined as the rapid rise and fall in the membrane…

Q: Which of the following combinations of spatial summation of postsynaptic potentials (PSP) would…

A: The graded potential achieved by dendrites of a neuron while receiving synapses from other cells is…

Q: Put the events for action potential generation in a neuron in the correct order (From 1-9)

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A: Membrane potential develops when there is difference in charge between the intracellular and…

Q: Which of the following is NOT an example of communication that happens from one neuron to another…

A: Answer: - Option a - Endocrine signalling (ex. hormones secreted into the bloodstream travel and…

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Q: You apply a drug to a batch of neurons and record membrane potential changes in the presynaptic and…

A: Ans: Chloride (Cl- )

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A: The generation of action potential is very much important characteristics in nerve cells that is…

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A: The quantal analysis is a group of methods that use statistical models to extract the basic…

Q: What is the difference between an action potential and a synapse? (select all that apply)

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A: In the presence and absence of an impulse, the nerve cells exist in two states known as action…

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A: Action potential generates when the neurons want to pass the information along the body from its…

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A: Depolarization of membrane potential excites the neurons. Depolarization refers to the change in…

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A: The cells of nervous system are called neurons. They have 3 distinct parts, including the body of…

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A: SNARE protein play important role in release of neurotransmitter from synaptic vesicles  as they…

Q: The giant squid axon has a diameter = 1mm and 1 = 13mm. Compared to a mammalian neuron with a…

A: Introduction  In neurons, graded potentials are electrical signals that vary in amplitude and…

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Q: Which of the following is FALSE about action potentials?      At resting potential, there are more…

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Cell Signaling

It allows cells to perform various cellular activities, coordinate, and interact with other cells. All cells of an organism receive signals from their environments and respond accordingly. Even the unicellular eukaryotes receive signals secreted by other cells and respond. In the case of yeast, mating takes place by signaling between the yeast cells. Communication by cell signaling in a multicellular organism has become a vast and important part of various fields of biology.