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kifflom [539]
3 years ago
14

Cellular cytoplasm is primarily composed of what substance

Biology
1 answer:
marishachu [46]3 years ago
6 0
Cytosol   i think hope this helped 
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The Answer is C, hope that helped.                            

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The function of the eardrum in the middle ear is to
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The answer is B- Vibrate <span>with the frequency of the received sound.</span>
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identify the subcellular structure of the neuron that forms the basis for the transmission of nerve impulses. (2 points) describ
melisa1 [442]

The subcellular structures of neuron that forms the basis for transmission of nerve impulses are the synaptic vesicles.

What are the steps in impulse transmission between neurons?

  • The action potential or nerve impulse reaches the <u>axon</u> of neuron and depolarises the membrane.
  • Voltage gated Calcium channels open .
  • Arrival of action potential causes the synaptic vesicle to attach to presynaptic membrane.
  • Calcium influx triggers release of neurotransmitter.
  • This neurotransmitters bind to postsynaptic membrane and new impulses are created.

Synaptic vesicle under resting condition:

  1. The neurotransmitter molecules are stored in synaptic vesicles.
  2. If the neurotransmitter leak from the vesicles, they are destroyed by enzymes.
  3. During resting condition, they are placed randomly.
  4. When an impulse reaches the axon, vesicles are arranged in the presynaptic membrane.

Thus from the above we can conclude that, synaptic vesicles are the subcellular structures in transmission of nerve impulses and , under resting condition they are placed randomly.

To know more about transmission of nerve impulses :

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4 0
1 year ago
Help me please omggggg ahhhhhh
Svet_ta [14]

Answer:

Letter C would be the best possible answer choice.

Without food, the deer will starve and die, unable to reproduce new deer. The wolves will eat the dead dear but run out of deer since there are none to reproduce more.

Explanation:

- 英辞郎 <3

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What happens in the postsynaptic neuron when excitatory neurotransmitters bind to receptors?
zubka84 [21]

Answer:

it causes the depolarization of the target cell

Explanation:

Glutamate is an excitatory amino acid neurotransmitter that binds to specific receptors on the surface of target cells and thus causes its depolarization. During glutamate-mediated depolarization, the difference in charge inside and outside the cell is lost due to the entry of sodium and calcium positive ions into the postsynaptic cell (neuron) through specific ion channels. Moreover, glutamate binding also leads to the exit of potassium ions from the cell, thereby resulting in excitation. Through this mechanism, glutamate regulates many signaling pathways, such as those involved in memory, learning, emotions, cognition, motor control, etc.

6 0
3 years ago
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