Biology: Life on Earth with Physiology (11th Edition)
Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 9.4, Problem 1CSC

Body, Heal Thyself

Ligaments and tendons have a limited capacity for self-repair. They tend to have a meager blood supply and contain only a small number of specialized cells that produce proteins, such as collagen and elastic, that provide flexibility and strength. In Bartolo Colón’s case, the hope was that the stem cells injected into his shoulder and elbow would progress rapidly through the cell cycle, producing large populations of specialized daughter cells that would regenerate his ligaments and tendons. How would mitotic cell division ensure that the daughter cells contained accurate copies of all of Colón’s chromosomes, including the genes that specify all of the proteins needed to repair his arm?

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Put the following types of stem cells in order from MOST useful in regenerative medicine to LEAST useful. Group of answer choices adult--multipotent--pluripotent--totipotent totipotent--pluripotent--multipotent--adult adult--pluripotent--multipotent--totipotent adult--totipotent--multipotent--pluripotent pluripotent--multipotent--totipotent--adult
Most nerve cells in the adult human central nervous system, as well as heart muscle cells, do not divide. In contrast, cells lining the inside of the small intestine divide frequently. Discuss this difference in terms of why damage to the nervous system and heart muscle cells (for example, that caused by a stroke or heart attack) is so dangerous. What do you think might happen to tissues such as the intestinal lining if a disorder blocked mitotic cell division in all cells of the body?
HeLa Cells are the most widely used human cell line. They have been used in thousands of studies, leading to countless discoveries. These cells were unknowingly taken from Henrietta Lacks, a Johns Hopkins Medical Center patient. Dr. Gey at Johns Hopkins Medical Center took some of the cells from Mrs. Lacks's cancer and discovered that they could keep growing and dividing indefinitely. Mrs. Lacks did not know these cells were taken from her and neither did any of her family members.  Today, strict guidelines protect individuals participating in a federally funded research study (e.g., in a clinical trial).  The study has to go through a lengthy review and participants receive information about all aspects of the study and provide “informed consent” to participate. These guidelines are known as the Common Rule.  However, the Common Rule does not apply to cells or tissues removed during medical procedures. Scientists can use leftover tissues from surgeries, and biopsies for research…

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Biology: Life on Earth with Physiology (11th Edition)

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TISSUE REPAIR Part 1: Repair - Regeneration; Author: ilovepathology;https://www.youtube.com/watch?v=t-5EjlS6qjk;License: Standard YouTube License, CC-BY