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Ket [755]
2 years ago
5

Why is there a delay between the ecg pattern and the resulting beat of the heart?

Biology
1 answer:
Rama09 [41]2 years ago
4 0

<span>There would be a delay between the ECG pattern and the resulting beat of the heart because it takes time for the pulse to travel from the systole (ventricular contraction) to the radial artery. Pulse cannot be felt in the finger. It can be felt with a pulse oxymeter.</span>

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Which statement is true?
astraxan [27]

Answer:

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Explanation:

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2 years ago
If you block histone deacetylase, what effect would you expect to see on transcriptional activity?.
Shalnov [3]
Histone deacetylase is responsible for removing the acetyl group from the histone 3 lysine 9 residue. Remember that deacetylation is one step in converting euchromatin to heterochromatin. Because euchromatin is transcriptionally active (transcriptional machinery is able to reach gene of interest), and blocking histone deacetylase activity would result in an the DNA remaining as euchromatin, we would expect to see an increase in transcriptional activity.

So there’s your answer: An increase in transcriptional activity.
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2 years ago
In which phase do sister chromatids line up in the middle of the cell, (in 'single-file', without a homologous partner)? Group o
ipn [44]

Answer:

The correct answer is ''METAPHASE I.''      

Explanation:

Metaphase I is the stage in which chromosomal studies are generally performed, because its morphology is very clear. The chromosomes, moved by the mitotic spindle, are placed in the center, between the two asters and form the so-called metaphase plate, in which the chromosomes are positioned in such a way that the kinetochore of each sister chromatid are oriented towards the opposite poles. Keeping chromosomes on the cell equator implies a balance between the forces of the microtubules that tend to move the kinetochores toward opposite poles, so positioning them in the center involves a great deal of energy.In each kinetochore, between 20-30 microtubules can be anchored, which exert traction force towards the pole from which they come, so the metaphase plate is maintained by the balance between the opposite forces of the poles on the chromosomes, which hold their sister chromatids by centromeric cohesin.

3 0
2 years ago
Where are ribosomes produced?
lord [1]

Answer:

In bacterial cells, ribosomes are synthesized in the cytoplasm through the transcription of multiple ribosome gene operons. In eukaryotes, the process takes place both in the cell cytoplasm and in the nucleolus, which is a region within the cell nucleus.

Hope this helps!

3 0
2 years ago
How does wind affect the amount of rain?
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please give me brainlist and follow

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The rainfall loss rate increases as the wind speed increases and/or the rainfall intensity decreases.

6 0
3 years ago
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