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ser-zykov [4K]
3 years ago
11

What is a B cell? Apex

Biology
2 answers:
kykrilka [37]3 years ago
7 0

Answer:

Explanation:

B cell is also called B lymphocyte. It is a type of leucocytes or white blood cell. Some of the B cells mature in the bone marrow into the plasma cells and some mature as memory cells. The plasma cells make antibodies which fight against the disease-causing pathogens which entered the body. Thus, B cells are associated with the immune system of the body.  

zhuklara [117]3 years ago
4 0

Answer:

Laying the viral antigens activate specialized white blood cells called <em>B cells</em>. The <em>B cells</em> change into plasma cells, which can then create specific antibodies to attach to the viral antigens. Antibodies make the viruses clump together, so they are then easier for white blood cells to destroy.

Hope that helps!!

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A geneticist introduces a transgene into yeast cells and isolates five independent cell lines in which the transgene has integra
Zina [86]

Answer:

A) A transgene integrated into a heterochromatic region of the genome.

Explanation:

This is most likely the reason why the transgene is not expressed in the fifth cell line. It is likely that the transgene was integrated into a heterochromatic region of the genome. Heterochromatin consists of genetically inactive satellite sequences, and many of these are repressed to various extents. Moreover, because this is a tightly packed form of DNA or condensed DNA, it is inaccesible to polymerases and thus not transcribed.

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What are the two factors that define our traits?
coldgirl [10]

There are a few theories as to what defines our traits to create our personality

According to one such theory, Dan P. McAdams claims our personalities develop in <span>three </span>stages:

<span>Our genes cause genetic mutations forming a 'draft' personality.During our early upbringing, our parents, teachers and friends treat us differently based on our looks and draft personality.Once we are older we then form a narrative of our lives based on our experiences growing up, and make decisions consistent with the character we have created.</span>

So our traits started from slight genetic variances, which effected how we were treated, which then shapes our own self-narrative. So really, our personality is one big story that we tell ourselves, and our childhood was the prologue to that story.

6 0
3 years ago
Which of the following describes how binary fission and mitosis are similar?
NISA [10]

The correct answer is A.

hope this helps :D

4 0
3 years ago
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I believe it's the long arm of chromosome 17.
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