Concept explainers
To analyze:
Why therapy that rebuilds the telomeres would not be a good way to achieve “eternal youth”.
Introduction:
The shortening of the telomere at each cycle of
Explanation of Solution
Cell death is very much a part of the natural functioning of a multicellular organism. This, however, leads to aging. It is known that the shortening of the telomeres of a chromosome beyond a certain point leads to cell death. However, if an attempt is made to maintain the length of telomeres by rebuilding them, the cells can turn cancerous. People who undergo such a therapy will have increased risk of cancer.
Rebuilding of the telomeres can make the cells become cancerous. this kind of therapy increases the risk of death by cancer. Therefore, it is not a good solution to the quest for “eternal youth”.
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Chapter 8 Solutions
EBK WHAT IS LIFE? A GUIDE TO BIOLOGY
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- Sometimes a cells "deal with" damaged DNA by just killing off the cell. This special cellular suicide is called apoptosis. Usually, the cell cycle has checkpoints that prevent damaged/mutated cells from proceeding to the next phase, though. When these checkpoints don't work, apoptosis can be used. If apoptosis did NOT occur, how might the damaged DNA impact the rest of the cell cycle? A. it may not complete the cell cycle correctly B. new cells containing damaged DNA may be made C. the cell may enter G0 D. all of the above are options E. A and B, but not C F. B and C, but not Aarrow_forwardThe continuity of life depends on a cell cycle during which genetic information is passed from a parent cell to daughter cells. Because cell division plays several important roles in life, it is important that the cycle be regulated. Which of the following are reasons the cell cycle must be regulated? Select all that apply. The continuity of life depends on a cell cycle during which genetic information is passed from a parent cell to daughter cells. Because cell division plays several important roles in life, it is important that the cycle be regulated.Which of the following are reasons the cell cycle must be regulated? Select all that apply.[ ]To make sure cells only divide when conditions are favorable for growth and development of the organism[ ]To make sure daughter cells end up with the right number of chromosomes[ ]To make sure daughter cells are genetically different from the parent cell[ ]To allow cells to respond to cues from their internal state and from their environment.arrow_forwardScientists are able to isolate cells in various phases of the cell cycle. During an experiment in which Dr. Patrick McGroyn is causing cultured tumor cells to go through mitotic cell division, he isolates a group of cells that contain one and a half times more DNA than cells isolated in the G1 phase have. What phase must these cells be in? How do you know?arrow_forward
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- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning