Nas 2 TCC Actual Exam Newest 2025/2026 Complete
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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.
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.)
- 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?
- ans -- 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 - ans -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.
Basic requirements for cellular life: - ans -- Transport of molecules
- Conversion of Energy
Questions And Correct Detailed Answers |Already Graded
A+||Already Graded A+
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.
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.)
- 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?
- ans -- 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 - ans -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.
Basic requirements for cellular life: - ans -- Transport of molecules
- Conversion of Energy
