Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 32, Problem 4TYU
Homeostasis typically relies on negative feedback because positive feedback
- A. requires a response but not a stimulus.
- B. drives processes to completion rather than to a balance point.
- C. acts within, but not beyond, a normal range.
- D. can decrease but not increase a variable.
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Which of these statements about homeostasis is true? a.The internal environment is maintained absolutely constant. b.Negative feedback mechanisms act to correct deviations from a normal range within the internal environment. c.Homeostasis is maintained by turning effectors on and off. d.All of these are true.
Which of the following statements best describes homeostasis?
a. Keeping the body in a fixed and unaltered state
b. Dynamic equilibrium
c. Maintaining a near-constant internal environment
d. Altering the external environment to accommodate the body's needs
Explain the concept of a homeostatic loop; what is the difference between positive and negative feedback?
Chapter 32 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 32.1 - What properties do all types of epithelia share?Ch. 32.1 - Prob. 2CCCh. 32.2 - Prob. 1CCCh. 32.2 - Prob. 2CCCh. 32.2 - Prob. 3CCCh. 32.3 - Is it accurate to define homeostasis as a constant...Ch. 32.3 - Prob. 2CCCh. 32.3 - Prob. 3CCCh. 32.4 - What is the function of the filtration step in...Ch. 32.4 - What advantage does uric acid offer as a...
Ch. 32.4 - WHAT IF? A camel standing in the sun requires much...Ch. 32.5 - Prob. 1CCCh. 32.5 - Prob. 2CCCh. 32.5 - WHAT IF? If blood pressure in the afferent...Ch. 32 - The body tissue that consists largely of material...Ch. 32 - Prob. 2TYUCh. 32 - Which process in the nephron is least selective?...Ch. 32 - Homeostasis typically relies on negative feedback...Ch. 32 - Prob. 5TYUCh. 32 - In which of the following species should natural...Ch. 32 - Prob. 7TYUCh. 32 - Prob. 8TYUCh. 32 - Prob. 9TYUCh. 32 - Prob. 10TYUCh. 32 - FOCUS ON ORGANIZATION In a short essay (100-150...Ch. 32 - SYNTHESIZE YOUR KNOWLEDGE These macaques (Macaca...
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- Tissue that contracts and is striated and involuntary would most likely be found in (a) the leg (b) the wall of the stomach (c) the exocrine glands (d) body structures requiring very rapid contraction (e) the heartarrow_forwardWhich of the following is not a type of connective tissue? a. bone b. blood c. the spinal cord d. tendons e. the tissue that attaches epithelial tissue to underlying structuresarrow_forwardWhich of the following is not true for f negative feedback loops? A. In a negative loop, the response to the signal or stimulus decreases the original signal or stimulus. B. Negative feedback loops maintain homeostasis. C. Negative feedback loops are temporary. D. There are many more instances of negative feedback loops in the human body than positive feedback loops.arrow_forward
- Which of the following is an example of a negative feedback loop? a) shivering in response to a cold b)platelets responding to a cut c) childbirth d) lactationarrow_forwardwhich of the following situations illustrates that a homeostatic mechanism is not operating properly? a. acute high blood pressure b. normalized blood glucose levels c. dailt fluid intake equals dailty fluid output d. all of these illustrate homestatic mechanisms operating properlyarrow_forwardWhat does negative feedback do? a. It establishes a set point. b. It changes the set point. c. It eliminates the set point. d. It reduces discrepancies from a set point.arrow_forward
- Describe in your own words the important features of homeostasis using the following terms in your explanation: negative feedback, internal environment, receptor, controller and effector.arrow_forwardWhich of the following statements best describes homeostasis? a.)Keeping the body in a fixed and unaltered state b.)Dynamic equilibrium c.)A body's ability to maintain a constant internal environment d.)Altering the external environment to accommodate the body's needsarrow_forwardDistinguish between negative feedback and positivefeedback mechanisms in regard to homeostasis.arrow_forward
- which of the following statements are true about homeostasis? Select all that apply. a. The selective permeability of the cell membrane allows for thermoregulation. b. Homeostasis is an organism‘s way of maintaining constant and balanced internal processes. c. Ectotherms rely on environmental heat to maintain homeostasis. d. Homeostasis works by a system of positive feedback.arrow_forwardA) Divergent Process B) Positive Feedback Process C) Negative Feedback Process D) Neutral Processarrow_forwardWhy is feedback mechanism important in homeostasis?arrow_forward
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