Answer:
Option c (No, T cells left from the previous infection can kill any virus.
)
Explanation:
When ever viral infection occur, body's immune system start to fight against it by activating B-cells and T-cells.
B-cells produce antibodies that bind with virus and act as label. This label indicate virus as foreign substance. Hence T-cells recognize it and kill it. Furthermore, B-cells form memory cell that keep the viral memory. if this viral infection occur again in future, T-cell recognize it and eliminate the virus.This mechanism is called immunity.
Answer:
Kidneys
Explanation:
The paired kidneys are often considered the main organs of excretion. The primary function of the kidneys is the elimination of excess water and wastes from the bloodstream by the production of the liquid waste known as urine
Answer:
the soil matter formed by decade organic matter is called humus.
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.
To write your argument first write an appropriate thesis statement, then look for reliable information to support it and include this information.
<h3>What is the purpose of an argument?</h3>
The purpose of an argumentative text is to prove the author's position.
<h3>How to write an argument?</h3>
- Define your position about an issue and write it briefly; this would be your thesis statement. For example if the topic is pollution a possible thesis statement is "Government policie are key in reducing the city's pollution.
- Look for reliable and credible sources to support the thesis statement. To do this make sure the information is updated and the author is credible.
- Start writing a text that explains your position by citing the information found in the sources.
- Continue adding ideas and roofread the text until your position is completely supported and explain.
Note: This question is incomplete because the topic you need to write about is not given; due to this, the answer is based on general knowledge.
Learn more about argument in: brainly.com/question/1305239
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