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NAS 2 TCC study guide Questions and
Correct Answers/ Latest Update / Already
Graded
What is the purpose of the scientific method?
Ans: 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?
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.
Distinguish between independent and dependent variables
Ans: An independent variable is the variable that is changed or
controlled in a scientific experiment to test the effects on the
dependent variable.
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A dependent variable is the variable being tested and measured
in a scientific experiment.
Distinguish between control and experimental groups
Ans: 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.
Ans: 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
Ans: 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.)
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Ans: 1) Chemical Level
2) Cellular level
3)Tissue level
4)Organ level
5)Organ system level
6) Organismal level
Identify the requirements for life:
Ans: 1. Reproduction 2. Response/reaction to environment 3.
Metabolism 4. Growth.
Identify survival needs:
Ans: survival needs (5): nutrients, oxygen, water, stable body
temperature, and atmospheric pressure
What is homeostasis?
Ans: 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?
All rights reserved © 2025/ 2026 |
NAS 2 TCC study guide Questions and
Correct Answers/ Latest Update / Already
Graded
What is the purpose of the scientific method?
Ans: 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?
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.
Distinguish between independent and dependent variables
Ans: An independent variable is the variable that is changed or
controlled in a scientific experiment to test the effects on the
dependent variable.
All rights reserved © 2025/ 2026 |
, Page |2
A dependent variable is the variable being tested and measured
in a scientific experiment.
Distinguish between control and experimental groups
Ans: 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.
Ans: 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
Ans: 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.)
All rights reserved © 2025/ 2026 |
, Page |3
Ans: 1) Chemical Level
2) Cellular level
3)Tissue level
4)Organ level
5)Organ system level
6) Organismal level
Identify the requirements for life:
Ans: 1. Reproduction 2. Response/reaction to environment 3.
Metabolism 4. Growth.
Identify survival needs:
Ans: survival needs (5): nutrients, oxygen, water, stable body
temperature, and atmospheric pressure
What is homeostasis?
Ans: 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?
All rights reserved © 2025/ 2026 |
