Response Feedback Barr bodies are formed because otherwise a female would

Response feedback barr bodies are formed because

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Response Feedback: Barr bodies are formed because otherwise, a female would produce twice as much gene product as a male from genes on the X chromosome, and too much of some gene products can be harmful. Question 36 0 out of 1 points A(n) ___ is to reproductive cloning as a(n) ___ is to therapeutic cloning. Answer Selected Answer: enucleated egg; specialized cell Correct Answer: clone; specialized cell Response Feedback: In reproductive cloning, a donor nucleus from an individual organism is used generate the new organism, so it is genetically identical to the original organism, or a clone. The end result of therapeutic cloning is various cell types that can be used to treat disease. Question 37 0 out of 1 points Which of the following series of events is in the correct order? Answer Selected Answer: chemical binds to receptor, target gene is transcribed and translated, signal transduction pathway stimulates proteins that bring about desired changes Correct
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Answer: chemical binds to receptor, signal transduction pathway stimulates transcription activator, target gene is transcribed and translated Response Feedback: Signal transduction pathways are initiated by the binding of a chemical signal by a receptor, which initiates the pathway. The pathway usually ends with the stimulation of a transcription activator, which brings about the needed response in the cell by causing the transcription of needed genes. Question 38 0 out of 1 points Which of the DNA sequences shown in the figure is/are bound by a regulatory protein? Answer Selected Answer: 2 Correct Answer: 3 Response Feedback: The operator sequence serves as a binding site for the repressor protein. While the promoter and the lactose metabolizing genes are bound by a protein (RNA polymerase), RNA polymerase is not a regulatory protein. Question 39 1 out of 1 points Which of the following events in gene expression control does not occur in the nucleus? Answer Selected Answer: mRNA translation Correct Answer: mRNA translation Response Feedback: All of the above processes, except for translation of mRNA, occur within the nucleus. Question 40
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1 out of 1 points A protein that promotes apoptosis would be considered a(n) Answer Selected Answer: tumor suppressor. Correct Answer: tumor suppressor. Response Feedback: Tumor suppressor proteins are generally defined as those that inhibit the cell cycle and/or promote apoptosis. Mutation of these proteins can lead to cancer because cells that are stimulated to undergo apoptosis will not respond to the signals and keep dividing. Friday, April 26, 2013 9:53:51 AM CDT OK
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  • Spring '17
  • Betty Herring
  • Biology, DNA, Correct Answer

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