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Homeostasis

Quiz by Zhao

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24 questions
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  • Q1
    What is homeostasis?
    The maintenance of a stable internal environment in response to changes in external conditions
    The process of converting food into energy
    The process of breaking down waste products in the body
    The ability of a cell to replicate
    30s
  • Q2
    Which of the following is NOT an example of homeostasis?
    A person experiencing a fever
    A person sweating in response to high temperatures
    A person shivering in response to cold temperatures
    A plant opening and closing its stomata to regulate water loss
    30s
  • Q3
    What is the role of negative feedback in homeostasis?
    To counteract changes in the internal environment and maintain stability
    To initiate changes in the internal environment
    To regulate the production of hormones in the body
    To amplify changes in the internal environment
    30s
  • Q4
    Which of the following is an example of positive feedback?
    The release of oxytocin during childbirth
    The production of red blood cells in response to low oxygen levels
    The production of adrenaline in response to stress
    The regulation of blood sugar levels by insulin
    30s
  • Q5
    What is the primary organ responsible for maintaining homeostasis?
    The pancreas
    The liver
    The hypothalamus
    The kidneys
    30s
  • Q6
    Which of the following is NOT a component of the homeostatic control system?
    The integrator
    The spinal cord
    The sensor
    The effector
    30s
  • Q7
    What is the set point in homeostasis?
    The range of values for a physiological variable
    The response of the body to changes in the internal environment
    The desired value of a physiological variable
    The ability of the body to maintain stability
    30s
  • Q8
    Which of the following is an example of a physiologic variable regulated by homeostasis?
    Eye color
    Hair length
    Foot size
    Body temperature
    30s
  • Q9
    What is the primary mechanism by which the body regulates body temperature?
    Urinating
    Panting
    Vomiting
    Sweating and shivering
    30s
  • Q10
    Which of the following is an example of a hormonal response to stress?
    The release of bile by the liver
    The release of cortisol by the adrenal glands
    The release of insulin by the pancreas
    The release of oxygen by red blood cells
    30s
  • Q11
    Which of the following is an example of a homeostatic imbalance?
    Athletic performance at the highest level
    Hypertension (high blood pressure)
    The natural growth spurt during puberty
    Recovery from a minor injury
    30s
  • Q12
    What is the set point in homeostasis?
    The ideal or target level for a particular variable
    The average level observed in the population
    The maximum level that can be tolerated before damage occurs
    The minimum level required for survival
    30s
  • Q13
    Which of the following is an example of negative feedback?
    A book being put back on a shelf.
    A car braking to slow down.
    A thermostat turning on and off to maintain a temperature.
    A microphone picking up sound and amplifying it.
    30s
  • Q14
    What is a feedback loop?
    A process in which the input of a system is completely ignored.
    A process in which the input of a system is fed back into the system as output.
    A process in which the output of a system is fed back into the system as input.
    A process in which the output of a system is completely ignored.
    30s
  • Q15
    What is the definition of an ecosystem?
    A group of animals that are closely related.
    The process by which plants use sunlight to make food.
    A place where only one type of living thing exists.
    A community of living and non-living things interacting with each other.
    30s

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