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Body cells can be called?
Somatic cell.
What enzyme is present in cancer cells which scientists believe allows the cancer cells to keep growing indefinitely?
The enzyme present in cancer cells that allows them to keep growing indefinitely is called telomerase. Telomerase helps maintain the length of the telomeres, which are the protective caps on the ends of chromosomes. By preventing telomeres from shortening with each cell division, telomerase enables cancer cells to keep dividing and growing uncontrollably.
Is telomerase a ribozyme?
No, it is an enzyme. Some textbooks claim it to be a ribozyme, but it is definitely an cellular enzyme. It has a reverse transcriptase part and a rna part. it uses the rna part as a primer and elongates the 3' end of a DNA strand which has been shortened during replication. It is usually not expressed in eucryotic cells but is active in proliferating eucaryotic cells such as germ cells. In tumor cells telomerase may be re-activated and thus the cell proliferates unrestrainedly.
How many chromosomes have non somatic cell?
Non-somatic cells, such as germ cells (sperm and egg cells), have half the number of chromosomes compared to somatic cells. In humans, somatic cells have 46 chromosomes, while germ cells have 23 chromosomes.
Is somatic cells associated with meiosis?
Somatic cells are not associated with meiosis. Meiosis only occurs in specialized cells called germ cells, which are responsible for producing eggs or sperm in organisms undergoing sexual reproduction. Somatic cells, on the other hand, undergo mitosis for growth and repair in multicellular organisms.
When is telomerase active?
Telomerase is typically active during cell division to maintain the length of telomeres, which are protective caps on the ends of chromosomes. In most somatic cells, telomerase activity is low or absent, but in stem cells, germ cells, and cancer cells, telomerase is more active to prevent telomere shortening.
What is telomerase. In what cells is telomerase normally functioning?
Telomerase is an enzyme that adds repetitive nucleotide sequences to the ends of chromosomes, known as telomeres, thereby preventing their shortening during cell division. It is primarily active in stem cells, germ cells, and certain types of cancer cells, allowing these cells to maintain their ability to divide indefinitely. In most somatic cells, telomerase activity is low or absent, leading to gradual telomere shortening and eventual cellular aging.
Where is active telomerase found in?
Active telomerase is commonly found in stem cells, germ cells, and cancer cells. It is also present in some cells undergoing rapid proliferation, such as embryonic cells.
What does the telomerase enzyme do?
Telomerase maintains the telomeres of chromosomes in order to prevent cell death. This enzyme added sequences onto the ends of the chromosomes, thereby preventing extreme shortening and loss of genetic material. In a way, telomerase would give cells immortal life, by continuously regenerating its ends. However, telomerase are usually inactive in the human body because normal cells do not divide frequently, and therefore, the chromosomes do not shorten.
What kinds of organisms require teleomerase?
Telomerase is primarily required by organisms that have cells capable of unlimited division, such as stem cells, germ cells, and many cancer cells. In these cells, telomerase helps maintain the length of telomeres, which are protective caps at the ends of chromosomes that shorten with each cell division. While most somatic cells in higher organisms lack significant telomerase activity and undergo a limited number of divisions, certain unicellular organisms, like yeast and some protozoa, also rely on telomerase for their reproductive and longevity processes.
Are there any types of human body cells where telomerase activation would be advantageous or even necessary?
Yes, telomerase activation can be advantageous in certain types of human body cells, particularly stem cells and germ cells. In these cells, telomerase helps maintain telomere length, allowing for continuous division and the potential for tissue regeneration and repair. Additionally, in some cancer therapies, telomerase inhibitors are being explored to target cancer cells, which often express telomerase to sustain their rapid proliferation. However, excessive telomerase activity can also contribute to tumorigenesis, so its regulation is critical.
Body cells can be called?
Somatic cell.
What types of cells express the telomerase?
cells that replenish the lining of the gut
What is another name for normal body cells?
Another name for body cells is somatic cells.
What enzyme is present in cancer cells which scientists believe allows the cancer cells to keep growing indefinitely?
The enzyme present in cancer cells that allows them to keep growing indefinitely is called telomerase. Telomerase helps maintain the length of the telomeres, which are the protective caps on the ends of chromosomes. By preventing telomeres from shortening with each cell division, telomerase enables cancer cells to keep dividing and growing uncontrollably.
Is telomerase a ribozyme?
No, it is an enzyme. Some textbooks claim it to be a ribozyme, but it is definitely an cellular enzyme. It has a reverse transcriptase part and a rna part. it uses the rna part as a primer and elongates the 3' end of a DNA strand which has been shortened during replication. It is usually not expressed in eucryotic cells but is active in proliferating eucaryotic cells such as germ cells. In tumor cells telomerase may be re-activated and thus the cell proliferates unrestrainedly.
Do gametes come from germ cells of somatic cells?
somatic cell
