NAS 2 TCC Study Guide– Questions With Applicable
Solutions
What is the purpose of the scientific method? Correct 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? Correct 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 Correct 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 Correct 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. Correct 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 Correct 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.) Correct 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: Correct Answer - 1. Reproduction 2.
Response/reaction to environment 3. Metabolism 4. Growth.
Identify survival needs: Correct Answer - survival needs (5): nutrients,
oxygen, water, stable body temperature, and atmospheric pressure
What is homeostasis? Correct 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? Correct 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 Correct 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.
Solutions
What is the purpose of the scientific method? Correct 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? Correct 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 Correct 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 Correct 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. Correct 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 Correct 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.) Correct 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: Correct Answer - 1. Reproduction 2.
Response/reaction to environment 3. Metabolism 4. Growth.
Identify survival needs: Correct Answer - survival needs (5): nutrients,
oxygen, water, stable body temperature, and atmospheric pressure
What is homeostasis? Correct 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? Correct 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 Correct 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.
