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- 1. Multiple Choice
Which of the following describes homeostasis?
keeps variables exactly at the set point
organism's ability to maintain steady(stable) internal conditions
acts to keep values outside of a desired range
operates through positive feedback
- 2. Multiple Choice
Negative feedback loops ...
are one way an organism can maintain homeostasis.
are rarely found in healthy individuals
respond by making deviations from normal even larger
cannot be counteracted with medicine
- 3. Multiple Choice
Which correctly identifies all steps involved in negative feedback?
initiation event, stimulus, positive feedback, response, effector, control center, receptor
termination event, stimulus, reply, effector, control center, and receptor
initiation event, response, stimulus, effector, command center
initiation event, stimulus, receptor, control center, effector and response
- 4. Multiple Choice
What part of the negative feedback loop is what happens inside of the organism, as the result of the effector?
Initiation event
Response
Receptor
Effector
- 5. Multiple Choice
This part of the negative feedback loop causes a change in the environment, a disruption to homeostasis.
initiation event
control center
effector
receptor
- 6. Multiple Choice
A change inside of the organism caused by the initiation event is the ...
response
effector
control center
stimulus
- 7. Multiple Choice
Which part of the feedback loop is a body part that makes a change to bring the system back to homeostasis?
Effector
control center
response
receptor
- 8. Multiple Choice
What detects that the system is outside of homeostasis and adjustments need to be made?
effector
response
control center
stimulus
- 9. Multiple Choice
The body part that senses the change inside the organism ...
receptor
control center
effector
response
- 10. Multiple Choice
Identify the initiation event.
Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed and the person begins to sweat and their body temperature decreases.
temperature change is noticed
person begins to sweat
body temperature decreases
person begins to exercise
- 11. Multiple Choice
Identify the stimulus event.
Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed and the person begins to sweat and their body temperature decreases.
body temperature increases
person begins to sweat
temperature change is noticed
person begins to exercise
- 12. Multiple Choice
Identify the stimulus that restores homeostasis.
Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed (sensed) and the person begins to sweat and their body temperature decreases.
temperature changes is noticed
a person begins to exercise
body temperature increases
body temperature decreases
- 13. Multiple Choice
Which part of the feedback loop and body is responsible for sensing the temperature change?
Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed (sensed) and the person begins to sweat and their body temperature decreases.
control center - sweat glands
receptor - sweat
control center - hypothalamus (part of the brain)
receptor - brain and skin receptors
- 14. Multiple Choice
Identify the response.
Scenario: A person begins to exercise which causes their body temperature to increase. The temperature change is noticed (sensed) and the person begins to sweat and their body temperature decreases.
the person begins to sweat
the person begins to exercise
change in temperature
body temperature increases
- 15. Multiple Choice
Which of the following is an example of a response to an internal stimulus?
you are tired
you are hot
you eat food
you are scared
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