NAS 2 CHALLENGE EXAM-REAL ACTUAL EXAM-LATEST
UPDATE 2025 | COMPLETE QUESTIONS WITH CORRECT
DETAILED ANSWERS | RATED 100% CORRECT | ALREADY
GRADED A+
What is the purpose of the Scientific Method? - (answers)Test the hypothesis
What are the steps of the Scientific Method - (answers)1. problem
2. hypothesis
3. procedure
4.analyze
5.conclusion
Independent Variable - (answers)The experimental factor that is manipulated; the
variable whose effect is being studied.
Dependent Variable - (answers)The outcome factor; the variable that may change in
response to manipulations of the independent variable.
Control Groups - (answers)groups whose members do not obtain the treatment, while
other conditions are held constant
Experimental Groups - (answers)treatment groups; the participants in a study that
receive the intervention
Define Anatomy and Physiology - (answers)Anatomy: the study of the body's parts or
the body's structure
Physiology: the sturdy of how the body parts work or how the body functions
Structure determines function; function determines structure - they're inseparable.
The six levels of organization - (answers)chemical, cellular, tissue, organ, organ system,
organism
Requirements of life - (answers)water, food, oxygen, heat, pressure
Survival needs - (answers)nutrients, oxygen, water, body temperature, atmospheric
pressure
,Homeostasis - (answers)A tendency to maintain a balanced or constant internal state;
the regulation of any aspect of body chemistry, such as blood glucose, around a
particular level
Basic mechanism for homeostasis - (answers)receptor, control center, effector
Positive feedback loop - (answers)feedback loop that causes a system to change
further in the same direction
Negative feedback loop - (answers)A feedback loop that causes a system to change in
the opposite direction from which it is moving
Anatomical Position - (answers)erect, feet forward, arms at side with palms facing
forward, head facing forward
Dorsal - (answers)toward the back
Lateral - (answers)away from the midline
Superior - (answers)above
Inferior - (answers)below
Anterior - (answers)toward the front
Posterior - (answers)toward the back
Medial - (answers)toward the midline
Distal - (answers)away from the point of attachment
Superficial - (answers)near the surface
Deep - (answers)more internal
Thoracic - (answers)chest area
Axial - (answers)head, neck, trunk
Appendicular - (answers)limbs
Three Planes of Dissection - (answers)frontal (coronoal), saggital, transverse
Cranial Cavity - (answers)Brain
Vertebral Cavity - (answers)Spinal Cord
, Thoracic - (answers)heart, trachea, and lungs
mediastinum - (answers)between lungs
pericardial - (answers)heart
pleural - (answers)lungs
abdominal - (answers)spleen, intestines
pelvic - (answers)bladder, reproductive organs
ionic bonds - (answers)electrons are transferred
covalent bonds - (answers)electrons are shared
hydrogen bonds - (answers)hydrogen is weakly attracted to a very electronegative atom
nonpolar covalent bond - (answers)electrons are shared equally (atoms are roughly
equally electronegative)
polar covalent bond - (answers)electrons are not shared equally (atoms are vastly
different in electronegativity)
decomposition reaction - (answers)single reactant breaks down to form multiple
products
synthesis reaction - (answers)multiple reactants combine to form a single product
exchange reactions - (answers)multiple molecules exchange reactants to form two new
products
how do enzymes catalyze reactions? - (answers)provide a different pathway to get to
the end product with a lower activation energy
why is water important to life? - (answers)1. its a solvent
2. many compounds can ionize (convert themselves into an ion by removing electrons)
ex: electrolytes
3. water is very reactive
ex: dehydration synthesis
ex: hydrolysis
4. high heat capacity
ex: thermal inertia
ex: large heat of vaporization
5. lubrication: can reduce friction and build up
UPDATE 2025 | COMPLETE QUESTIONS WITH CORRECT
DETAILED ANSWERS | RATED 100% CORRECT | ALREADY
GRADED A+
What is the purpose of the Scientific Method? - (answers)Test the hypothesis
What are the steps of the Scientific Method - (answers)1. problem
2. hypothesis
3. procedure
4.analyze
5.conclusion
Independent Variable - (answers)The experimental factor that is manipulated; the
variable whose effect is being studied.
Dependent Variable - (answers)The outcome factor; the variable that may change in
response to manipulations of the independent variable.
Control Groups - (answers)groups whose members do not obtain the treatment, while
other conditions are held constant
Experimental Groups - (answers)treatment groups; the participants in a study that
receive the intervention
Define Anatomy and Physiology - (answers)Anatomy: the study of the body's parts or
the body's structure
Physiology: the sturdy of how the body parts work or how the body functions
Structure determines function; function determines structure - they're inseparable.
The six levels of organization - (answers)chemical, cellular, tissue, organ, organ system,
organism
Requirements of life - (answers)water, food, oxygen, heat, pressure
Survival needs - (answers)nutrients, oxygen, water, body temperature, atmospheric
pressure
,Homeostasis - (answers)A tendency to maintain a balanced or constant internal state;
the regulation of any aspect of body chemistry, such as blood glucose, around a
particular level
Basic mechanism for homeostasis - (answers)receptor, control center, effector
Positive feedback loop - (answers)feedback loop that causes a system to change
further in the same direction
Negative feedback loop - (answers)A feedback loop that causes a system to change in
the opposite direction from which it is moving
Anatomical Position - (answers)erect, feet forward, arms at side with palms facing
forward, head facing forward
Dorsal - (answers)toward the back
Lateral - (answers)away from the midline
Superior - (answers)above
Inferior - (answers)below
Anterior - (answers)toward the front
Posterior - (answers)toward the back
Medial - (answers)toward the midline
Distal - (answers)away from the point of attachment
Superficial - (answers)near the surface
Deep - (answers)more internal
Thoracic - (answers)chest area
Axial - (answers)head, neck, trunk
Appendicular - (answers)limbs
Three Planes of Dissection - (answers)frontal (coronoal), saggital, transverse
Cranial Cavity - (answers)Brain
Vertebral Cavity - (answers)Spinal Cord
, Thoracic - (answers)heart, trachea, and lungs
mediastinum - (answers)between lungs
pericardial - (answers)heart
pleural - (answers)lungs
abdominal - (answers)spleen, intestines
pelvic - (answers)bladder, reproductive organs
ionic bonds - (answers)electrons are transferred
covalent bonds - (answers)electrons are shared
hydrogen bonds - (answers)hydrogen is weakly attracted to a very electronegative atom
nonpolar covalent bond - (answers)electrons are shared equally (atoms are roughly
equally electronegative)
polar covalent bond - (answers)electrons are not shared equally (atoms are vastly
different in electronegativity)
decomposition reaction - (answers)single reactant breaks down to form multiple
products
synthesis reaction - (answers)multiple reactants combine to form a single product
exchange reactions - (answers)multiple molecules exchange reactants to form two new
products
how do enzymes catalyze reactions? - (answers)provide a different pathway to get to
the end product with a lower activation energy
why is water important to life? - (answers)1. its a solvent
2. many compounds can ionize (convert themselves into an ion by removing electrons)
ex: electrolytes
3. water is very reactive
ex: dehydration synthesis
ex: hydrolysis
4. high heat capacity
ex: thermal inertia
ex: large heat of vaporization
5. lubrication: can reduce friction and build up
