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Len [333]
3 years ago
11

Complete the sentence. A biological agent that cannot reproduce on its own is a/an ________.

Biology
2 answers:
ehidna [41]3 years ago
4 0
The best and most correct answer among the choices provided by your question is the first choice or letter A. <span>A biological agent that cannot reproduce on its own is a VIRUS.

</span>A virus<span> is a small infectious agent that replicates only inside the living cells of other organisms.
</span>
I hope my answer has come to your help. Thank you for posting your question here in Brainly.

Westkost [7]3 years ago
4 0
<h2>Answer:</h2>

Virus.

<h2>Explanation:</h2>

A biological agent that cannot reproduce on its own is a VIRUS. A virus is a minute infectious agent that replicates just inside the living cells of different organisms, It typically consists of a nucleic acid molecule in a protein coat, it is extremely small to be viewed by light microscopy, and is able to multiply only among the living cells of a host.

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Do the results shown in Figure 19.5 prove conclusively that histone modifications are causing reduced Hnf4a gene transcription?
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Explain why transboundary environmental threats like pollution are a problem for both parties, even if one community is principa
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Due to its spreading nature.

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4 years ago
identify the subcellular structure of the neuron that forms the basis for the transmission of nerve impulses. (2 points) describ
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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 :

brainly.com/question/840056

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1 year ago
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