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Vera_Pavlovna [14]
3 years ago
13

Place the events in the transmission of an action potential in the correct order. 1. An action potential begins in the receiving

neuron. 2. Neurotransmitters are released into the synaptic cleft. 3. An action potential arrives at an axon terminal. 4. Calcium ions enter the axon terminal. 5. Sodium ions diffuse into the receiving neuron. 6. Synaptic vesicles fuse with the plasma membrane. 7. Neurotransmitter molecules bind to the membrane of the receiving neuron.
A. 1,2,6,7,4,3,5
B. 3,5,6,2,7,4,1
C. 3,4,6,2,7,5,1
D. 2,3,6,7,4,5,1
E. 7,6,5,3,4,2,1
Biology
1 answer:
musickatia [10]3 years ago
6 0

Answer:

c

Explanation:

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First of all, it is important to understand the difference between passive and active immunity.

Passive immunity is when we are given antibodies that were not produced by our own body (for example those transferred from mother to child, or those taken as part of medication or therapy - note that the former would be an example of naturally acquired passive immunity and the latter of artificially acquired passive immunity).

Active immunity, on the other hand, refers to antibodies that were produced by our own bodies due to exposure to a pathogen or part thereof - this can also be naturally acquired, such as when we are infected by a pathogen, or artificially, such as when we are vaccinated.

Given this information, what enabled Gina to fight the pathogen would be the second answer (antibodies she received from her mother), however we can also look at the other answers and discount them as false to be sure:

Answer 1 - high fever caused by a pathogen

The question states that Gina was able to fight off the pathogen before she got sick - a fever suggests that:

a) she is already sick

b) her body is launching its own immune response

Answer 3 - antibodies she received from a vaccination

The antibodies produced as a result of vaccination are produced by your own body (despite being stimulated artificially through exposure to the pathogen), thus this is not the correct answer.

Answer 4: inflammation caused by antibodies

This answer is incorrect due to the fact that antibodies do not directly cause inflammation.

Thus, the correct answer is the second one 'antibodies she received from her mother'.

Hope that helps :)

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3 years ago
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Answer:

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  During anaerobic condition the functionally active body cells undergo glycolysis and with each glycolysis 2 molecules of ATP are generated which can some how boost the energy supply within runner"s body.

   

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The answer is: Carbon dioxide and water released by cellular respiration are used in photosynthesis.

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