1
NAS 2 TCC Study Guide Exam Questions With
Answers (Verified And 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.
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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
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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
NAS 2 TCC Study Guide Exam Questions With
Answers (Verified And 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.
, 2
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
, 3
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
