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Sophie [7]
2 years ago
13

Degranulation ____________ hemostasis. First, ____________ spasm constricts the broken blood vessel, reducing hemorrhage. There

are ____________ hemostatic mechanisms. ____________ finishes the process by clotting the blood and protecting the body from excess blood loss. In platelet plug formation, a large mass of platelets ____________ and undergo degranulation.
Biology
1 answer:
s2008m [1.1K]2 years ago
4 0

The Answers to your questions are as listed below

Degranulation <u>promotes</u> hemostasis, First, <u>Vascular  </u>spasm constricts, There are <u>Three</u> hemostatic mechanisms, <u>Coagulation</u> finishes the process by clotting the blood, A large mass of platelets <u>aggregate</u> and undergo degranulation

<h3>Hemostatic mechanisms</h3>

The three hemostatic mechanisms that are :

  • Constriction of blood vessels
  • Formation of temporary hemostatic plug
  • Formation of definitive hemostatic plug from temporary

Hemostasis is the body's natural reaction to an injury sustained whereby the body tries to stop the injured part from bleeding and naturally repairs the injured part of the body.

Hence we can conclude that the answers to your question are as listed above.

Learn more about hemostasis : brainly.com/question/8192445

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The interaction between DNA and histone proteins (forming nucleosomes) plays a key role in the regulation of gene expression in
ladessa [460]

Answer:

A. The chromatin near cis-regulatory sequences will be more closed and there will be less transcription.

Explanation:

In the presence of histones, the cis-regulatory sequences of DNA like promoter, enhancers etc. are not exposed. The function of the histone acetyltransferases (HATS) is to cause chromosome decondensation i.e. removal of histones from the DNA so that transcription of the DNA could occur. Histone acetyltransferases (HATS) cause acetylation of lysine amino acid of the histone proteins. Acetyl group is negatively charged so the acetylation of histone proteins leads to the removal of their positive charge which ultimately leads to the decrease in the interaction between N terminal of histones and negatively charged phosphate group of the DNA molecule. As soon as histones are removed from the DNA where cis-regulatory sequences are located, the DNA becomes accessible for transcription.

But here a drug has been added which blocks the activity of histone acetyltransferases (HATS) in cancer cells. So it is quite evident that in these cells, histones will not get removed from the cis-regulatory sequences of DNA so the DNA will be more closer or tightly packed as a result of which  less transcription will occur.

7 0
3 years ago
Rivers and streams are biodiverse ecosystems that are sensitive to change. please select the best answer from the choices provid
mylen [45]

It is true that rivers and streams are biodiverse ecosystems that are sensitive to change. Details about rivers and streams can be found below.

<h3>What is river and stream?</h3>

A river is a large and often winding stream which drains a land mass, carrying water down from higher areas to a lower point, oftentimes ending in another body of water, such as an ocean or in an inland sea.

On the other hand, a stream is a small river or a body of moving water confined by banks.

Rivers and streams are both freshwater ecosystems, hence, tend to respond to changes in their environment caused by anthropogenic activities.

Therefore, it is true that rivers and streams are biodiverse ecosystems that are sensitive to change.

Learn more about rivers and streams at: brainly.com/question/10904801

#SPJ4

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Hope this helps you

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