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A telomere is the structure at each end of a chromosome. It consists of an area of highly repeated DNA combined with protein. Its main function is to protect the end of the chromosome.
Telomeres are instrumental in enabling the cells to divide and replicate. But as we grow older these tips wear out and shorten much like the shoelace caps. When they get too short, we get diseases and die. The three Nobel Prize winners found this as they were looking for a cure for cancer.
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Explain telomere erosion and the role of telomerase?
Telomere erosion is the shortening of the protective caps at the end of chromosomes called telomeres, which occurs with each cell division and is associated with aging and cell senescence. Telomerase is an enzyme that helps to maintain telomere length by adding repetitive DNA sequences to the ends of chromosomes. It is particularly active in stem cells and cancer cells, allowing them to continue dividing without undergoing senescence or apoptosis.
How does this word part relate to the meaning of the terms telomere and telophase?
The word part "telo-" originates from the Greek word "telos," meaning end or completion. In the terms telomere and telophase, "telo-" refers to different stages or structures involving the end or completion of something. Telomeres are repetitive DNA sequences at the ends of chromosomes, protecting them from degradation, while telophase is a stage in cell division where the chromosomes reach opposite ends of the cell.
What is the protective cap of DNA on the tip of chromosomes?
The telomere is the protective cap of DNA on the tip of chromosomes. You lose a small amount of these telomeres each time the cell divides. Eventually the telomeres be lost as you age. Short chromosomes because of lack telomeres are one reason aging occurs.
What are some ribonucleoproteins?
Some examples of ribonucleoproteins include the signal recognition particle (SRP), telomerase, and small nucleolar ribonucleoproteins (snoRNPs). These complexes contain RNA molecules bound to proteins and play roles in various cellular processes such as protein synthesis, telomere maintenance, and ribosomal RNA processing.
What cell words begin with letters a-z?
Some cell words that begin with letters A to Z are: apoptosis, blastocyst, cytoplasm, dendrite, endoplasmic reticulum, flagella, Golgi apparatus, helix, mitochondria, nucleus, organelle, peroxisome, ribosome, synapse, telomere, vacuole, and zona pellucida.
What is the medical definition of telomere?
A telomere in medical terminology means the end of a chromosome that is used to regenerate cells. Every time a cell dies the telomere regenerates the cell.
What do you call the tip of a chromosome?
Telomere
What is the tip of chromosome called?
telomere
Which part of chromosome exchange during meiosis centromere or telomere?
During meiosis, chromosome exchange occurs at the chiasmata, which are points of crossing over between non-sister chromatids. The exchange involves the exchange of genetic material between homologous chromosomes, not specifically at the centromere or telomere regions.
Explain telomere erosion and the role of telomerase?
Telomere erosion is the shortening of the protective caps at the end of chromosomes called telomeres, which occurs with each cell division and is associated with aging and cell senescence. Telomerase is an enzyme that helps to maintain telomere length by adding repetitive DNA sequences to the ends of chromosomes. It is particularly active in stem cells and cancer cells, allowing them to continue dividing without undergoing senescence or apoptosis.
Does the entire DNA replicate?
No, the telomere is shortened after each replication.
What do telomerase do?
enzyme that helps in sythesis and elongation of telomere length
What is the link between telomeres and aging?
Telomeres shorten with each cellular replication; telomere length is inversely proportional to age. While telomere extension does tend to make cells "young again", telomere extension is problematic for a treatment for age because many kinds of cancer replicate indefinitely due in part to the fact they have overactive telomerase, a protein that extends the telomeres. Until the link between cancer and telomeres is understood, telomere extension therapy will not be feasible.
What is a telomere amd how does it affect cloned animals?
After each cell division the telomere gets shorter, it's a marker of an old cell. It's present in eukaryotic cells as a stop signal for gene transcription.
What term describes a structure that protects the ends of a chromosome?
Telomere. Telomeres are repetitive DNA sequences located at the ends of chromosomes that help protect them from degradation and prevent the loss of genetic information during cell division.
Where is the diagnostics port on a Citroen DS5?
The COVID-19 Test by Telomere Diagnostics is available for available for purchase to institutions, employers, and organizations nationwide. TELOMERE DIAGNOSTICS SALES AND PROMOTIONS cutt.ly/QhN2ZX9
Are all of the genes in a cell used?
No, there is garbage DNA at the ends of the chromosomes (Telomere). The telomere does have a purpose but it does not get used for instructions to create fingers or modify skin complexion etc.
