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NAS2 CHALLENGE EXAM
QUESTIONS AND VERIFIED
SOLUTIONS
Question : Purpose of Scientific Method
CORRECT ANSWER : solve a problem or answer a
question
Question : Question, Hypothesis, Experiment, Observe &
Record, Analyze, Conclude
CORRECT ANSWER : steps of scientific method
Question : Independent variable
CORRECT ANSWER : a variable that stands alone and
isn't changed by the other variables you are trying to measure, change or controlled
example: age
Question : dependent variable
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CORRECT ANSWER : a variable dependent on other
factors, tested or measured
example: test score - factors that go into a score you
receive on a test
Question : control group
CORRECT ANSWER : does not receive treatment and
used to compare or measure the other subjects
Question : experimental group
CORRECT ANSWER : exposed to changes in
independent variable
Question : anatomy
CORRECT ANSWER : branch of science concerned
with bodily structure of living organisms; structure
Question : physiology
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CORRECT ANSWER : science dealing with the
functions of living things or their organs
Question : level of organization
CORRECT ANSWER : living things arranged from the
simplest to most complex are:
organelle cells tissues organs organ systems, organism populations communities ecosystem biosphere
Question : requirements for life
CORRECT ANSWER : Cellular organization
Reproduction Metabolism
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Homeostasis Heredity Response to stimuli Growth and development Adaptation through evolution
Question : survival needs
CORRECT ANSWER : Food, oxygen, water, body
temperature, atmospheric pressure (oxygen/carbon dioxide exchange)
Question : homeostasis
CORRECT ANSWER : relatively constant internal
physical and chemical conditions that organisms maintain
Question : receptor
CORRECT ANSWER : senses environmental stimulus
and sends info to control center