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omeli [17]
3 years ago
10

What nuclear and cytoplasmic changes would you expect to find in cancer cells?

Biology
1 answer:
Alla [95]3 years ago
7 0
<span>Cells do not live forever. They either divide on two new cells through mitosis or die. Mitosis is a highly controlled process because if something goes wrong in mitosis, the healthy cells will divide uncontrollably. New cells, cancer cells, will also divide of control.
Cancer cells differ from normal cells:
</span>- they are of irregular size and shape,<span>
- their nucleus increases in size,
- shape and density of the nucleus are changed,
- chromatin is changed,
- nucleus segmentation often occurs,
- the cytoplasm is scarce,
- the cytoplasm changes its colour (either pale or intensely coloured)
- mRNA is accumulated in the cytoplasm,
- mitochondria decrease their volume,
- different organelles in the cytoplasm undergo changes.

</span>
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Which of the following statements about the genetic code is true?
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Answer:

c. Some codons specify the same amino acid.

Explanation:

Codons are triplets of nucleotides in mRNA that is used for the protein synthesis (translation). A codon specifies a single amino acid, but there are exceptions. tRNA molecule contain anticodons, triplets of nucleotides that are complementary to codons. So, during the translation, tRNA carries the amino acid, that corresponds to  the codon in mRNA.

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Yaws is a serious skin disease of children in tropical countries, caused by Treponema pertenue, a species closely related to the
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Answer:

The correct answer is- spirochetes

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Spirochetes are a group of bacteria which are long, flexible and helical shaped. Some of them are associated with some disease in humans like yawns, lime disease, syphilis, etc.  

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So the cells of T. pertenue which are helical, relatively long, and flexible known as spirochetes.

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• Dr. Smith wants to examine whether a new drug increases the maze running
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Independent Variable: Give one group the drug and dont give the other group the drug

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