BIOM 525 EXAM 4 HUMAN PHYSIOLOGY
PRACTICE QUESTIONS AND RATIONALE GUIDE
2026
◉ Which components of a general reflex arc are listed in the order
information typically flows through them following a stimulus?
Integrating center, receptor, afferent pathway, efferent pathway,
effector
Receptor, efferent pathway, integrating center, afferent pathway,
effector
Effector, efferent pathway, integrating center, afferent pathway,
receptor
Receptor, afferent pathway, integrating center, efferent pathway,
effector
Effector, afferent pathway, integrating center, efferent pathway,
receptor. Answer: Receptor, afferent pathway, integrating center,
efferent pathway, effector
,◉ Both primary and secondary active transport require the
expenditure of metabolic energy.
True
False. Answer: True
◉ A cell with a predominance of free ribosomes is most likely
________.
digesting large food particles
primarily producing proteins for secretion
primarily producing proteins in the cytosol
constructing an extensive cell wall or extracellular matrix
enlarging its vacuole. Answer: primarily producing proteins in the
cytosol
◉ What term is used to describe the steady-state value for any
variable that the body attempts to maintain?
Equilibrium potential
Set point
Median value
Error signal
Reflex arc. Answer: set point
,◉ Nitrogen (N) is more electronegative than hydrogen (H). Which of
the following is a correct statement about the atoms in ammonia
(NH3)?
Each hydrogen atom has a partial positive charge; the nitrogen atom
has a partial negative charge.
Ammonia has an overall negative charge.
There are covalent bonds between the hydrogen atoms and polar
bonds between each hydrogen atom and the nitrogen atom.
The nitrogen atom has a partial positive charge; each hydrogen atom
has a partial negative charge.
Ammonia has an overall positive charge.. Answer: Each hydrogen
atom has a partial positive charge; the nitrogen atom has a partial
negative charge.
◉ What level does the skeletal system belong to?. Answer: Organ
System level
, ◉ How do carbohydrates contain and/or display information for
cells?
Carbohydrates store information in the nucleus.
Carbohydrates have no role in containing or displaying information
for cells.
Carbohydrates display information used by mitochondria to bond to
substrates and catalyze reactions.
Carbohydrates contain and display information at the cell surface..
Answer: Carbohydrates contain and display information at the cell
surface.
◉ The wall of the intestines needs to form an impenetrable barrier
that prevents the passage of molecules through the extracellular
space (the only route of passage must be for molecules to move
through the cells). What type of cellular junction would be most
appropriate for this task?
Desmosomes
Tight junctions
Gap junctions
PRACTICE QUESTIONS AND RATIONALE GUIDE
2026
◉ Which components of a general reflex arc are listed in the order
information typically flows through them following a stimulus?
Integrating center, receptor, afferent pathway, efferent pathway,
effector
Receptor, efferent pathway, integrating center, afferent pathway,
effector
Effector, efferent pathway, integrating center, afferent pathway,
receptor
Receptor, afferent pathway, integrating center, efferent pathway,
effector
Effector, afferent pathway, integrating center, efferent pathway,
receptor. Answer: Receptor, afferent pathway, integrating center,
efferent pathway, effector
,◉ Both primary and secondary active transport require the
expenditure of metabolic energy.
True
False. Answer: True
◉ A cell with a predominance of free ribosomes is most likely
________.
digesting large food particles
primarily producing proteins for secretion
primarily producing proteins in the cytosol
constructing an extensive cell wall or extracellular matrix
enlarging its vacuole. Answer: primarily producing proteins in the
cytosol
◉ What term is used to describe the steady-state value for any
variable that the body attempts to maintain?
Equilibrium potential
Set point
Median value
Error signal
Reflex arc. Answer: set point
,◉ Nitrogen (N) is more electronegative than hydrogen (H). Which of
the following is a correct statement about the atoms in ammonia
(NH3)?
Each hydrogen atom has a partial positive charge; the nitrogen atom
has a partial negative charge.
Ammonia has an overall negative charge.
There are covalent bonds between the hydrogen atoms and polar
bonds between each hydrogen atom and the nitrogen atom.
The nitrogen atom has a partial positive charge; each hydrogen atom
has a partial negative charge.
Ammonia has an overall positive charge.. Answer: Each hydrogen
atom has a partial positive charge; the nitrogen atom has a partial
negative charge.
◉ What level does the skeletal system belong to?. Answer: Organ
System level
, ◉ How do carbohydrates contain and/or display information for
cells?
Carbohydrates store information in the nucleus.
Carbohydrates have no role in containing or displaying information
for cells.
Carbohydrates display information used by mitochondria to bond to
substrates and catalyze reactions.
Carbohydrates contain and display information at the cell surface..
Answer: Carbohydrates contain and display information at the cell
surface.
◉ The wall of the intestines needs to form an impenetrable barrier
that prevents the passage of molecules through the extracellular
space (the only route of passage must be for molecules to move
through the cells). What type of cellular junction would be most
appropriate for this task?
Desmosomes
Tight junctions
Gap junctions
