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NAS 2 CHALLENGE EXAM - TIDEWATER COMMUNITY COLLEGE
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NAS 2 CHALLENGE EXAM - TIDEWATER COMMUNITY COLLEGE
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NAS 2 CHALLENGE EXAM - TIDEWATERCOMMUNITY COLLEGE
purpose of scientific method Correct Ans - guide researchers in
planning, conducting, and interpreting research studies
order of scientific method Correct Ans - observation, question,
hypothesis, prediction, experiment, conclusion
Steps of the Scientific Method Correct Ans - Ask a Question
Do Background Research
Construct a Hypothesis
Test Your Hypothesis by Doing an Experiment
Analyze Your Data and Draw a Conclusion
Communicate Your Results
Hypothesis Correct Ans - A testable prediction, often implied by a
theory
Theory Correct Ans - A hypothesis that has been tested with a
significant amount of data
sample size Correct Ans - the number of times a measurement is
replicated in data collection
Trials Correct Ans - the number of times an experiment is repeated
Control Correct Ans - In an experiment, the standard that is used
for comparison
Placebo Correct Ans - something which has a positive mental effect,
but no physical effect
independent variable Correct Ans - The experimental factor that is
manipulated; the variable whose effect is being studied.
,dependent variable Correct Ans - The outcome factor; the variable
that may change in response to manipulations of the independent variable.
Constants/Controlled Variables Correct Ans - the conditions of the
experiment that we keep the same.
Anatomy Correct Ans - The study of body structure
Physiology Correct Ans - the study of how the body and its parts
work or function
Levels of organization Correct Ans - chemical, cellular, tissue,
organ, organ system, organism
CHEMICAL Correct Ans - any substance that has a definite
composition
CELL Correct Ans - The basic unit of structure and function in
living things
Tissue Correct Ans - A group of similar cells that perform the same
function.
Organ Correct Ans - A collection of tissues that carry out a
specialized function of the body
organ system Correct Ans - A group of organs that work together to
perform a major function.
Organism Correct Ans - A living thing
survival needs Correct Ans - nutrients, oxygen, water, normal body
temperature, appropriate atmospheric pressure
Metabolism Correct Ans - All of the chemical reactions that occur
within an organism
Homeostasis Correct Ans - process by which organisms maintain a
relatively stable internal environment
, homeostatic mechanisms Correct Ans - self-regulating systems that
monitor aspects of the internal environment and correct them as needed
components of homeostasis Correct Ans - stimulus, receptor,
control center, set point, effector
Stimulus Correct Ans - a signal to which an organism responds
Receptor Correct Ans - protein that detects a signal molecule and
performs an action in response
control center Correct Ans - processes the signal and sends
instructions
set point Correct Ans - A set point is the physiologicalvalue around
which the normal range fluctuates
Effector Correct Ans - an organ or cell that acts in response to a
stimulus.
negative feedback mechanism Correct Ans - The most common
homeostatic control mechanism. The net effect is that the output of the
system shuts off the original stimulus or reduces its intensity.
positive feedback mechanism Correct Ans - the result or response
enhances the original stimulus so that the response is accelerated
anatomical position Correct Ans - erect, feet forward, arms at side
with palms facing forward, head facing forward
Body Regions Correct Ans -
superficial Correct Ans - near the surface
deep Correct Ans - Away from the body surface; more internal
Superior Correct Ans - Higher on the body, nearer to the head
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