NAS 2 TCC study guide with 100% correct answers(latest update)
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Course
NAS2 Challenge
Institution
NAS2 Challenge
What is the purpose of the scientific method?
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?
Ask a Question.
Do Background Research.
Construct a Hypothesis.
Test Your Hypothesis by Doing an Exp...
NAS 2 TCC study guide with
100% correct answers(latest
update)
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.
T est 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
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