Campbell Biology: Concepts & Connections (8th Edition)
8th Edition
ISBN: 9780321885326
Author: Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan
Publisher: PEARSON
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Chapter 11, Problem 11TYK
A chemical called dioxin is produced as a by-product of some chemical manufacturing processes. This substance was present in Agent Orange, a defoliant sprayed on vegetation during the Vietnam War. There has been a continuing controversy over its effects on soldiers exposed to it during the war. Animal tests have suggested that dioxin can be lethal and can cause birth defects, cancer, organ damage, and immune system suppression. But its effects on humans are unclear, and even animal tests are inconclusive. Researchers have discovered that dioxin enters a cell and binds to a protein that in turn attaches to the cell’s DNA. How might this mechanism help explain the variety of dioxin’s effects? How might you determine whether a particular individual became ill as a result of exposure to dioxin?
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Chapter 11 Solutions
Campbell Biology: Concepts & Connections (8th Edition)
Ch. 11 - Complete the following concept map to test your...Ch. 11 - Level 1: Knowledge/Comprehension 2. Which of the...Ch. 11 - A homeotic gene does which of the following? a. It...Ch. 11 - Which of the following is a valid difference...Ch. 11 - The control of gene expression is more complex in...Ch. 11 - Your bone cells, muscle cells, and skin cells look...Ch. 11 - Prob. 7TYKCh. 11 - You obtain an egg cell from the ovary of a white...Ch. 11 - Mutations can alter the function of the lac operon...Ch. 11 - A mutation in a single gene may cause a major...
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- Stem Cell ResearchThe inner cell mass in a blastocyst is pluripotent. Pluripotency means that each one of the cells is capable of differentiating into any type of cell in the human body.These pluripotent cells can be used to create any cells, tissues, or organs in the body. They can replace organs without the patients having to worry about organ rejection or taking immune-suppressing medication for the rest of their lives in order to reduce the chance of organ rejection. The pluripotent cells can also be used to help those with diabetes, spinal cord injury, multiple sclerosis, or cancer, among many of diseases. There are several different sources of pluripotent cells. The best and most reliable source is the stem cells from an embryo. There are other types of stem cells such as induced pluripotent cells and embryonic stem cells created through various processes. In Canada, unused embryos from an in vitro fertilization procedure may be donated for stem cell research. However, the gamete…arrow_forwardNew treatments for several conditions are being developed using stem cells in medical waste, such as biopsy material, teeth, menstrual blood, umbilical cords, and fatty tissue removed in liposuction. For example, fat samples from injured horses are used to grow stem cells to treat tendon injuries. Explain how the two defining characteristics of stem cells enable them to be used to replace damaged or diseased tissue, so that the new tissue functions as opposed to forming a scar.arrow_forwardWhich of the following best describes a gene that codes for a tumor-suppressor protein? a. One that helps to prevent progression through the cell cycle. b. One that helps prevent apoptosis. c. One that codes for a DNA repair enzyme. d. One that supports part of a growth factor signaling pathway.arrow_forward
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