NAS 2 TCC STUDY GUIDE EXAM; QUESTIONS WITH
VERIFIED ANSWERS
What exactly is the objective of the scientific method? - ANSWER: The scientific
method is a structured approach to studying the natural world and determining how
it operates.
What are the steps to the scientific method? - ANSWER: Ask a question.
Conduct background research.
Develop a hypothesis.
Experiment to test your hypothesis.
Analyze your data and conclude.
Communicate Your Results.
Distinguish between independent and dependent variables. ANSWER: An
independent variable is altered or controlled in a scientific experiment to see how it
affects the dependent variable.
A dependent variable is a variable that is tested and measured in a scientific
experiment.
Distinguish between control and experimental groups. ANSWER: An experimental
group is a group in an experiment that receives the variable under test. A single
variable is checked at a time. The experimental group is compared to the control
group, which is not given the test variable.
Distinguish between hypothesis and theory. - ANSWER: A hypothesis is an
attempt to explain phenomena. It is a proposition or assumption made to better
understand and/or forecast something. A theory is the outcome of testing a
,hypothesis and generating an explanation that is assumed to be correct about
something.
Define Anatomy and Physiology: ANSWER Anatomy is the study of the structure
and relationship of body parts.
Physiology is the study of how different body components and the entire body
work together.
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 necessities of life: - ANSWER 1. Reproduction 2. ANSWER/reaction
to Environment 3. Metabolism 4. Growth.
Identify survival needs: - ANSWER: nutrition, oxygen, water, constant body
temperature, and atmospheric pressure.
What is homeostasis? - ANSWER The ability of an organism or cell to regulate its
internal conditions, typically via a feedback control system, to maintain health and
function in the face of changing external situations.
What are the fundamental mechanisms of homeostasis? - ANSWER: Homeostatic
control methods have at least three interdependent components: receptor, control
centre, and effector.
, - The receptor detects external stimuli and transmits the information to the control
centre.
- The control centre, typically the brain, instructs an effector (such as muscles) to
respond to stimuli.
- Positive feedback improves or accelerates the output generated by an active
stimulus.
- Negative feedback restores a system's natural function, such as regulating blood
pressure, metabolism, and body temperature.
ANSWER: Anatomical position is the description of any region or part of the body
in a certain stance. In the anatomical position, the body is erect, directly facing the
viewer, with feet flat and pointed forward. The upper limbs are at the body's sides,
palms facing forward.
SUPERIOR - The answer above the head is superior to the neck.
INFERIOR - The answer below the neck is inferior to the head.
ANTERIOR (VENTRAL) - ANSWER CLOSE TO THE FRONT OF THE BODY;
THE LIPS ARE ANTERIOR TO THE TEETH.
POSTERIOR (DORSAL) - ANSWER CLOSE TO THE BACK OF THE BODY;
THE TEETH ARE POSTERIOR TO THE LIPS.
MEDIAL - ANSWER CLOSER TO THE BODY'S MIDLINE- THE NOSE IS
MEDIAL TO THE EYES.
LATERAL - ANSWER FURTHER FROM THE BODY'S MIDLINE- THE EYES
ARE LATERAL TO THE NOSE.
VERIFIED ANSWERS
What exactly is the objective of the scientific method? - ANSWER: The scientific
method is a structured approach to studying the natural world and determining how
it operates.
What are the steps to the scientific method? - ANSWER: Ask a question.
Conduct background research.
Develop a hypothesis.
Experiment to test your hypothesis.
Analyze your data and conclude.
Communicate Your Results.
Distinguish between independent and dependent variables. ANSWER: An
independent variable is altered or controlled in a scientific experiment to see how it
affects the dependent variable.
A dependent variable is a variable that is tested and measured in a scientific
experiment.
Distinguish between control and experimental groups. ANSWER: An experimental
group is a group in an experiment that receives the variable under test. A single
variable is checked at a time. The experimental group is compared to the control
group, which is not given the test variable.
Distinguish between hypothesis and theory. - ANSWER: A hypothesis is an
attempt to explain phenomena. It is a proposition or assumption made to better
understand and/or forecast something. A theory is the outcome of testing a
,hypothesis and generating an explanation that is assumed to be correct about
something.
Define Anatomy and Physiology: ANSWER Anatomy is the study of the structure
and relationship of body parts.
Physiology is the study of how different body components and the entire body
work together.
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 necessities of life: - ANSWER 1. Reproduction 2. ANSWER/reaction
to Environment 3. Metabolism 4. Growth.
Identify survival needs: - ANSWER: nutrition, oxygen, water, constant body
temperature, and atmospheric pressure.
What is homeostasis? - ANSWER The ability of an organism or cell to regulate its
internal conditions, typically via a feedback control system, to maintain health and
function in the face of changing external situations.
What are the fundamental mechanisms of homeostasis? - ANSWER: Homeostatic
control methods have at least three interdependent components: receptor, control
centre, and effector.
, - The receptor detects external stimuli and transmits the information to the control
centre.
- The control centre, typically the brain, instructs an effector (such as muscles) to
respond to stimuli.
- Positive feedback improves or accelerates the output generated by an active
stimulus.
- Negative feedback restores a system's natural function, such as regulating blood
pressure, metabolism, and body temperature.
ANSWER: Anatomical position is the description of any region or part of the body
in a certain stance. In the anatomical position, the body is erect, directly facing the
viewer, with feet flat and pointed forward. The upper limbs are at the body's sides,
palms facing forward.
SUPERIOR - The answer above the head is superior to the neck.
INFERIOR - The answer below the neck is inferior to the head.
ANTERIOR (VENTRAL) - ANSWER CLOSE TO THE FRONT OF THE BODY;
THE LIPS ARE ANTERIOR TO THE TEETH.
POSTERIOR (DORSAL) - ANSWER CLOSE TO THE BACK OF THE BODY;
THE TEETH ARE POSTERIOR TO THE LIPS.
MEDIAL - ANSWER CLOSER TO THE BODY'S MIDLINE- THE NOSE IS
MEDIAL TO THE EYES.
LATERAL - ANSWER FURTHER FROM THE BODY'S MIDLINE- THE EYES
ARE LATERAL TO THE NOSE.
