NAS 2 TCC study guide Exam Questions And All Actual Answers.
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Course
NAS2 Challenge
Institution
NAS2 Challenge
What is the purpose of the scientific method? - Answer The scientific method is an organized way to study the natural world and find out how it works.
What are the steps of the scientific method? - Answer Ask a Question.
Do Background Research.
Construct a Hypothesis.
Test Your Hypothes...
NAS 2 TCC study guide Exam Questions
And All Actual Answers.
What is the purpose of the scientific method? - Answer The scientific method is an organized way to
study the natural world and find out how it works.
What are the steps of the scientific method? - Answer 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.
Distinguish between independent and dependent variables - Answer An independent variable is the
variable that is changed or controlled in a scientific experiment to test the effects on the dependent
variable.
A dependent variable is the variable being tested and measured in a scientific experiment.
Distinguish between control and experimental groups - Answer An experimental group is the group in
an experiment that receives the variable being tested. One variable is tested at a time. The experimental
group is compared to a control group, which does not receive the test variable.
Distinguish between hypothesis and theory. - Answer A hypothesis is an attempt to explain
phenomena. It is a proposal, a guess used to understand and/or predict something. A theory is the result
of testing a hypothesis and developing an explanation that is assumed to be true about something.
Define Anatomy and Physiology - Answer Anatomy is the study of the structure and relationship
between body parts.
Physiology is the study of the function of body parts and the body as a whole.
, Identify the six levels of organization (chemical, tissue, etc.) - Answer 1) Chemical Level
2) Cellular level
3)Tissue level
4)Organ level
5)Organ system level
6) Organismal level
Identify the requirements for life: - Answer 1. Reproduction 2. Response/reaction to environment 3.
Metabolism 4. Growth.
Identify survival needs: - Answer survival needs (5): nutrients, oxygen, water, stable body temperature,
and atmospheric pressure
What is homeostasis? - Answer The tendency of an organism or a cell to regulate its internal
conditions, usually by a system of feedback controls, so as to stabilize health and functioning, regardless
of the outside changing conditions.
What are the basic mechanisms of homeostasis? - Answer - Homeostatic control mechanisms have at
least three interdependent components: receptor, control center, and effector.
- The receptor senses environmental stimuli, sending the information to the control center.
- The control center, generally the brain, signals an effector (e.g. muscles) to respond to the stimuli.
- Positive feedback enhances or accelerates output created by an activated stimulus.
- Negative feedback brings a system back to its level of normal functioning such as adjusting blood
pressure, metabolism, and body temperature.
Anatomical position - Answer Anatomical position is the description of any region or part of the body in
a specific stance. In the anatomical position, the body is upright, directly facing the observer, feet flat
and directed forward. The upper limbs are at the body's sides with the palms facing forward.
SUPERIOR - Answer ABOVE THE HEAD IS SUPERIOR TO THE NECK
INFERIOR - Answer BELOW THE NECK IS INFERIOR TO THE HEAD
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