Levels of Structural Organization in Organisms
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Questions and Answers

What type of system is operating when the response reverses the stimulus?

  • Equilibrium feedback system
  • Positive feedback system
  • Negative feedback system (correct)
  • Stimulus feedback system

    • How does a system operate by positive feedback?

  • By enhancing or intensifying the stimulus (correct)
  • By reversing the stimulus
  • By maintaining equilibrium
  • By remaining within certain narrow limits

    • What happens if a component of the body loses its ability to contribute to homeostasis?

  • Homeostasis is maintained efficiently
  • The body becomes resistant to diseases
  • Normal balance among all processes is disturbed (correct)
  • The body stays healthy

    • What is the result of a severe homeostatic imbalance?

    <p>Occurrence of a disorder or disease</p> Signup and view all the answers

    Which term refers to subjective changes in body functions that are not apparent to an observer?

    <p>Symptoms</p> Signup and view all the answers

    What is the main characteristic of organs in the human body?

    <p>They consist of two or more different types of tissues</p> Signup and view all the answers

    At which level of structural organization do vital organs fall?

    <p>Organ level</p> Signup and view all the answers

    What is homeostasis primarily focused on?

    <p>Maintaining stability in changing external conditions</p> Signup and view all the answers

    Which of the following is an example of an external disruption to homeostasis?

    <p>Intense heat on a hot summer day</p> Signup and view all the answers

    How does the human body respond to disturbances in homeostasis?

    <p>Through feedback systems that aim to maintain stability</p> Signup and view all the answers

    What is the role of an effector in a feedback system?

    <p>Receives output from the control center and produces a response</p> Signup and view all the answers

    Which component of a feedback system evaluates the input received from receptors?

    <p>Control center</p> Signup and view all the answers

    In a feedback system, what role does a receptor play?

    <p>Monitors changes in controlled conditions</p> Signup and view all the answers

    What characterizes a negative feedback system in a feedback loop?

    <p>Reverses a change in controlled condition</p> Signup and view all the answers

    How does a positive feedback system differ from a negative feedback system in a feedback loop?

    <p>Strengthens or reinforces a change in controlled condition</p> Signup and view all the answers

    Which of the following is an example of a physiological sign of disease?

    <p>High blood pressure</p> Signup and view all the answers

    What organ system plays a crucial role in the maintenance of homeostasis?

    <p>Endocrine system</p> Signup and view all the answers

    Which condition is a major homeostatic imbalance affecting blood sugar levels?

    <p>Diabetes</p> Signup and view all the answers

    How do anatomical signs of disease differ from physiological signs?

    <p>Anatomical signs involve visible physical changes, while physiological signs involve internal body functions.</p> Signup and view all the answers

    In the context of disease, what role do feedback systems play in maintaining homeostasis?

    <p>Feedback systems help the body maintain stability by responding to changes.</p> Signup and view all the answers

    What is the main purpose of homeostasis in biological systems?

    <p>To maintain stability while adjusting to changing external conditions</p> Signup and view all the answers

    Which of the following best describes the characteristic of homeostasis?

    <p>A dynamic condition where the body's parameters can shift within a narrow range to maintain life</p> Signup and view all the answers

    What type of disruptions can affect homeostasis in the human body?

    <p>Both external disruptions like physical changes and internal disruptions like changes in blood glucose levels</p> Signup and view all the answers

    Which level of structural organization do organs belong to?

    <p>Level 4 - Organ level</p> Signup and view all the answers

    How is an organ system defined in terms of structure and function?

    <p>Related organs with a common function</p> Signup and view all the answers

    What type of feedback system reverses a change in a controlled condition?

    <p>Negative feedback system</p> Signup and view all the answers

    Which body structure monitors changes in a controlled condition and sends input to a control center in a feedback system?

    <p>Receptor</p> Signup and view all the answers

    What does a positive feedback system tend to do to a change in one of the body’s controlled conditions?

    <p>Strengthen or reinforce the change</p> Signup and view all the answers

    Which component of a feedback system produces a response that changes the controlled condition?

    <p>Effector</p> Signup and view all the answers

    Organs are composed of only one type of tissue.

    <p>False</p> Signup and view all the answers

    Homeostasis is a self-regulating process by which biological systems maintain stability.

    <p>True</p> Signup and view all the answers

    A vital organ not functioning can never result in death.

    <p>False</p> Signup and view all the answers

    Cells are composed of water, inorganic ions, and carbon-containing molecules at the tissue level.

    <p>False</p> Signup and view all the answers

    The chemical level of structural organization consists of subatomic particles like protons, electrons, and neutrons.

    <p>True</p> Signup and view all the answers

    Homeostasis refers to a state of internal balance maintained by the body, while homeostatic imbalance indicates a disruption in this balance.

    <p>True</p> Signup and view all the answers

    In a positive feedback system, the response reverses the stimulus.

    <p>False</p> Signup and view all the answers

    Homeostasis is maintained when body cells function inefficiently.

    <p>False</p> Signup and view all the answers

    Moderate homeostatic imbalance can lead to death.

    <p>False</p> Signup and view all the answers

    Disease is a less specific term compared to disorder.

    <p>False</p> Signup and view all the answers

    Vital organs are structures composed of only one type of tissue.

    <p>False</p> Signup and view all the answers

    Homeostasis in the human body is a static condition that never changes.

    <p>False</p> Signup and view all the answers

    Moderate homeostatic imbalance always leads to death.

    <p>False</p> Signup and view all the answers

    The chemical level of structural organization consists of four sub-levels.

    <p>True</p> Signup and view all the answers

    Homeostatic imbalances can only occur at the tissue level of structural organization.

    <p>False</p> Signup and view all the answers

    In homeostasis, cells are primarily composed of inorganic ions like sodium and potassium.

    <p>False</p> Signup and view all the answers

    In a negative feedback system, the response enhances or intensifies the stimulus.

    <p>False</p> Signup and view all the answers

    Homeostatic imbalance always leads to the occurrence of a disease.

    <p>False</p> Signup and view all the answers

    Cells are the smallest level of structural organization in the human body.

    <p>False</p> Signup and view all the answers

    A fluctuation in maintaining equilibrium within the body is a characteristic of homeostasis.

    <p>True</p> Signup and view all the answers

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