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pantera1 [17]
3 years ago
10

What is the correct answer for number 7 ? Explain why please !!

Biology
1 answer:
Katena32 [7]3 years ago
8 0

It's the nucleus since it contains all the information of the cell. The ER only "packages" and send the protein to the Golgi Body.

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Describe the physiological events occurring in the heart muscle represented by each ECG component (the P wave, QRS complex, and
Sauron [17]

Explanation:

  • <em>The P wave</em><em> represents the atrial depolarization (sum of the right and left atriums) and the atrial contraction.</em> In normal circumstances, the P wave is smooth and rounded (<2.5 mm) and no more than 0.12 seconds in duration. It's the first positive deflection (you can see this in the image I added)
  • <em>QRS complex</em> can include the Q wave, R wave, and S wave, but there are exceptions. <em>It represents the electrical impulse through the ventricles causing the ventricular depolarization.</em> <em>Its amplitude is the largest because ventricles are the chambers with the largest mass in the heart </em>and it has a duration of 0.06-0.10 seconds in adults.
  • <em>The T wave</em> is the positive deflection that follows the QRS complex, it represents the ventricular repolarization. It is slightly asymmetric (peak closer to its end). Normally this wave follows the QRS complex's direction, if this doesn't happen, it's reflecting a cardiac pathology.  
3 0
3 years ago
Which of the following is a benefit of scientists studying seismic waves?
kari74 [83]

it can help us determine and predict earth quakes. and also volcanic blasts because of when a volcano blows off and if its powerful enough like most it can cause the earth or nearby area to rumble or earthquake before it happenes because of the gasses have built up so much that the ground trapping the gasses cannot handle the pressure therefore crack the earth and explode the gasses making lots more pressure causing it to errupt... i think

7 0
3 years ago
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What is the best way to show opposition to policies you consider unjust?
Lady_Fox [76]
<span>The way to do this is called Civil Disobedience Martin Luther King Jr. described this as hatred and contempt for the law. It mostly involves telling the government no in subtle ways that does not involve violence resistance and peaceful demonstrations . usually it takes certain of such steps before governments can reverse certain policies that are unfavorable to her citizens.</span>
3 0
4 years ago
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Which statement describes a similarity between the calcium pump and the sodium-potassium pump? Both pumps move substances from h
kykrilka [37]

Answer:

The correct answer is both pumps use proteins to transport substances across the cell membrane.

Explanation:

Sodium potassium pump helps in the active transport or uphill transport of both sodium and potassium across the cell membrane against their concentration gradient.

  Whereas Ca2+ATPase or calcium pump itself is a trans membrane or membrane spanning protein which helps in the transport of Ca2+ outside the cell to maintain electrochemical potential of Ca2+ ions.

5 0
3 years ago
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A research team needs an antibody that binds to a protein of interest so that protein expression can be monitored. They use epit
antiseptic1488 [7]

Answer:

C.The added epitope disrupts the function of the tagged protein

Explanation:

When an additional sequence is tagged to a protein to use comercial antibodies, there are several reasons why this procedure wouldn't work as expected (note that we're assuming the protein is being expressed but it's not possible to detect it).

For example, the sequence of nucleotide added to codify for the tagged epitope are removed during the RNA processing. In that case, the protein would be expressed without the epitope, so it would be impossible to localize it with the antibodies.

Also, it could be that the new epitope is affecting some way the protein folding, making it not functional. This way, it would be degraded by the cell so it wouldn't be detected.

Another possibility is that the epitope doesn't affects the protein folding nor its function, but during the folding ends up in a conformation that makes it inaccesible for the antibody.

In summary, the way as the possible answers to this question are shown, the correct option seems to be C:<em> The added epitope disrupts the function of the target protein.</em>

3 0
3 years ago
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