Human Biology (MindTap Course List)
Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 8, Problem 5SQ

Which of the following statements about red blood cells is false?

  1. a. They live about 120 days before being replaced.
  2. b. They lack a nucleus and other organelles when they are mature.
  3. c. They are replaced when the hormone EPO stimulates stem cells in bone marrow.
  4. d. They are replaced as part of a negative feedback loop in which kidney cells monitor blood oxygen levels
  5. e. All the above statements are true except b, because all cells require a nucleus in order to function properly.
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