NAS2 Challenge Exam Questions and Verified Solutions 2024
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Course
NAS2
Institution
NAS2
NAS2 Challenge Exam Questions and
Verified Solutions 2024
Purpose of Scientific Method - Answer -solve a problem or answer a question
Question, Hypothesis, Experiment, Observe & Record, Analyze, Conclude - Answer -steps of scientific
method
Independent variable - Answer -a variable that stands...
homeostasis - Answer -relatively constant internal physical and chemical conditions that organisms
maintain
receptor - Answer -senses environmental stimulus and sends info to control center
control center - Answer -hypothalamus
signals effector
effector - Answer -responds to stimuli
example: muscle contracting
negative feedback mechanisms - Answer -net effect is that the original output of the system shuts off the
original stimulus or reduces the intensity
homeostasis
negative feedback mechanisms - Answer -most common form of homeostasis, bringing people back to
normal functioning
negative feedback mechanisms - Answer -example of homeostasis: adjustments of blood pressure,
metabolism, body temp
positive feedback mechanisms - Answer -form of homeostasis
level of variable changes in same direction as initial change
enhances or accelerates output created by activated stimulus
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