Answered: MakE ConnECtIonS name one or more…

MakE ConnECtIonS name one or more membraneactivities that occur both in fertilization of an egg andin neurotransmission across a synapse (see Figure 47.3).

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter41: Neural Signaling

Section: Chapter Questions

Problem 7TYU: VISUALIZE Describe the action taking place at each of the numbered steps in the figure.

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Concept explainers

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:

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MakE ConnECtIonS name one or more membrane
activities that occur both in fertilization of an egg and
in neurotransmission across a synapse (see Figure 47.3).

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MAKE CONNECTIONS What effect would you expect if you depolarizedthe neurons in the VTA (see Concept 48.3)? Explain.
Name one or more membrane activities that occur both in fertilization of an egg and in neurotransmission across a synapse.
Consider the circuit from Q5 (above). We want to add another inhibitory neuron to this circuit to increase the likelihood that neuron D will have an action potential. With which cell (A, B, C or D) should our new inhibitory neuron make a synapse to make it more likely that the post - synaptic neuron will have anaction potential?The diagram below shows a simple neural circuit with three pre - synaptic cells labelled 'A', 'B' and 'C', and a post - synaptic cell labelled 'D ' (see image below). Assume neurons A and B each have outputs of +2 and neuron C has output of -1.
synaptobrevin A-is activated by Sodium cations B-is an extracellular signalling molecule C-binds and stimulates post synaptic receptors D-is a synaptic protein involved in vesicular fusion with cytoplasmic membrane
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VISUALIZE Describe the action taking place at each of the numbered steps in the figure.
6. During repolarization, which channels are which channels are becoming inactive, and which are opening?___________________________________ ; ___________________________________.7. What pumps are responsible for restoring the concentration gradients of Na+ and K+ so that the neuron can once again generate an action potential? _______________________________________________8. Two kinds of conduction of an action potential (nerve impulse) are possible---continuous and saltatory. One form involves myelin sheaths and nodes of Ranvier, and is a faster conduction of the signal. Which type of conduction is this?___________________________________.9. What two factors determine how quickly an action potential will travel?___________________________________, ___________________________________.10. Neuron A sends an action potential to Neuron B. Which neuron (A or B) is the postsynaptic cell?___________________________________.11. Neuron B now sends the action potential on to Neuron C.…
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A neuron must reach threshold to fire an action potential. In this context, threshold refers to which event? a. voltage at which damage occurs to the membrane because of the electrical charge b. the voltage at which potassium ions begin to flow in and out of the cell c. the voltage at which voltage-gated sodium channels open d. the voltage at which the neuron can no longer produce an action potential According to studies in developing rodents, testosterone treatment causes detectable changes in: a. the sex region Y gene b. the thalamus c. the hypothalamus d. alpha-fetoprotein