NAS 2 TCC STUDY GUIDE CERTIFICATION
EVALUATION EXAMS 2026 SOLVED
QUESTIONS WITH FULL SOLUTION
◉ 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.
EVALUATION EXAMS 2026 SOLVED
QUESTIONS WITH FULL SOLUTION
◉ 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.
