A. The shorter the animals get, the more quickly their telomeres shorten. B. The shorter telomeres the bears have, the faster they will age. C. The shorter the telomeres get, the more slowly the bears will age. D. The longer the telomeres get, the shorter the extra life span a bear ...
Telomerase is responsible for preventing the shortening of the end of chromosomes (telomeres) upon cell division in order to circumvent the loss of important genetic material.Telomerase Prior to the initiation of cell division, a process called DNA replication occurs to duplicate the cell's genetic ...
Telomeres are comprised of a short sequence of nucleotides (5' TTAGGG 3') repeated over and over - upwards of 2,500 times in humans. Each time the DNA is replicated, the telomeres are worn down a small amount and become shorter and shorter as they age, which may be a key factor in ...
The reverse transcriptase, telomerase, can lengthen telomeres but is primarily expressed only in germ and stem cells. Telomere length is often considered a biomarker of aging because when telomeres reach critically short lengths cellular senescence or apoptosis is triggered. The first link between ...
What is intensive arable farming? What is ecological resilience? What is a stimulant? Give some examples. What is carrying capacity in ecology? What does concentration mean? What are ecotones in ecology? What are telomeres? What is zonation in ecology?
so the chromosome is now losing important genetic information and is no longer functional. But as long as the telomeres are a certain length they keep this from happening. So it seems that when the…by looking at the length of the telomeres on specific chromosomes, we can actually predict, ...
Dysfunctional telomeres activate an ATM-ATR-dependent DNA damage response to suppress tumorigenesis. EMBO J. 26, 4709–4719 (2007). CAS PubMed PubMed Central Google Scholar Kibe, T., Osawa, G. A., Keegan, C. E. & de Lange, T. Telomere protection by TPP1 is mediated by POT1a and ...
Why do bears with shorter telomeres get old faster? A. Because their bodies are weaker. B. Because their hibernnton is longer. C. Because their telomeres are shorter at the start D. Because their telomeres naturally get shorter as they grow older.16. In which part of a magazine can we...
More rarely, the sequence of telomeric DNA is heterogeneous. For example, baker’s yeast telomeres consist of ∼300 bp of C1–3A/TG1–3 DNA. Typically, the strand running 5′→3′ from the interior to the chromosome end is rich in G-residues and is extended to form a Genetic ...
D.His telomeres became longer. 相关知识点: 试题来源: 解析 [答案] A B D [考点] 细节理解题 [解析] (1)细节理解题。根据文章第十一、二行Be thankful for your mistakes, They will teach you valuable lessons"感谢你的错误 ,它们会给你带来宝贵的教训。”故选A. (2)推理判断题。根据文章倒数第...