MCAT Practice Multiple
Choices Questions with Latest
2025-2026 Correct Answers
GRADED A+
A stroke patient comprehends speech but cannot move her mouth to
form words. Which of the following brain areas is likely affected?
■Broca's area
■Wernicke's Area
■Arcuate fasciculus
■Superior temporal gyrus
- ANS - Broca's area (Broca's area governs the motor function of language.
A stroke that affects Broca's area will leave receptive language intact, but
word formation will be affected. A stroke affecting Wernicke's area,
choice (B), will make it so the individual is unable to comprehend speech.
A stroke affecting the arcuate fasciculus, choice (C), will result in an
inability to repeat words heard but spontaneous language production is
intact. The superior temporal gyrus, choice (D), is where Wernicke's area
is located.)
Each individual in a group of teenagers is asked to estimate the height of
a tree. One individual estimates the height to be 25 feet, but after
discussing with the group is convinced that the height is likely closer to
40 feet. Which type of conformity is seen here?
,■Obedience
■Identification
■Internalization
■Compliance
- ANS - Internalization (Internalization refers to the type of conformity in
which an individual changes her outward opinion to match the group and
also personally agrees with those ideas.)
Which of the following neurotransmitters is associated with both
schizophrenia and Parkinson's disease?
■GABA
■Serotonin
■Dopamine
■Enkephalins
- ANS - Dopamine (Schizophrenia is associated with high levels of
dopamine, or high sensitivity to dopamine. Parkinson's disease is
associated with destruction of the dopaminergic neurons in the basal
ganglia.)
Primary groups differ from secondary groups in that:
■A) primary groups are shorter-lived than secondary groups.
■B) primary groups are larger than secondary groups.
■C) primary groups are formed of stronger bonds than secondary groups.
■D) primary groups are assigned while secondary groups are chosen.
- ANS - C (Primary groups have direct and close bonds between members,
providing warm, personal, and intimate relationships to its members.
,Secondary groups, in contrast, form superficial bonds and tend to last for
a shorter period of time.)
A student is volunteering in a hospital with a stroke center. When asked
what he believes is the prevalence of stroke among those greater than 65
years old, the student states that it is probably about 40% even though
data analysis indicates that it is significantly lower. What accounts for
this error?
■Deductive reasoning
■Representativeness heuristic
■Base rate fallacy
■Confirmation bias
- ANS - Base rate fallacy (The base rate fallacy occurs when prototypical
or stereotypical factors are used for analysis rather than actual data.
Because the student is volunteering in a hospital with a stroke center, he
sees more patients who have experienced a stroke than would be
expected in a hospital without a stroke center. Thus, this experience
changes his perception and results in base rate fallacy. Deductive
reasoning, choice (A), refers to drawing conclusions by integrating
different pieces of evidence. The representativeness heuristic, choice (B),
involves categorization and classification based on how well an
individual example fits its category. Confirmation bias, choice (D), occurs
when a person only seeks information that reinforces his or her
opinions.)
Why are triacylglycerols used in the human body for energy storage?
■A) They are highly hydrated, and therefore can store lots of energy.
■B) They always have short fatty acid chains, for easy access by
metabolic enzymes.
, ■C) The carbon atoms of the fatty acid chains are highly reduced, and
therefore yield more energy upon oxidation.
■D) Polysaccharides, which would actually be a better energy storage
form, would dissolve in the body.
- ANS - C (Triacylglycerols are highly hydrophobic and therefore not
highly hydrated (which would add extra weight from the water of
hydration, taking away from the energy density of these molecules),
eliminating choice (A). The fatty acid chains produce twice as much
energy as polysaccharides during oxidation because they are highly
reduced. The fatty acid chains vary in length and saturation.)
Prolonged vitamin B12 deficiency can be associated with subacute
combined degeneration of the spinal cord. Patients with this disease have
difficulty walking because they lose the ability to feel where their feet are
in space. This represents a loss of:
■vestibular sense.
■kinesthetic sense.
■parallel processing.
■feature detection.
- ANS - Kinesthetic sense (Kinesthetic sense, or proprioception, refers to
the ability to tell where body parts are in three-dimensional space. The
sensors for proprioception are found predominantly in the muscles and
joints. Loss of vestibular sense, choice (A), would also cause difficulty
walking, but this would be due to a sense of dizziness or vertigo, not an
inability to feel one's feet.)
Which of the following is/are function(s) of NADPH in the cell?
Choices Questions with Latest
2025-2026 Correct Answers
GRADED A+
A stroke patient comprehends speech but cannot move her mouth to
form words. Which of the following brain areas is likely affected?
■Broca's area
■Wernicke's Area
■Arcuate fasciculus
■Superior temporal gyrus
- ANS - Broca's area (Broca's area governs the motor function of language.
A stroke that affects Broca's area will leave receptive language intact, but
word formation will be affected. A stroke affecting Wernicke's area,
choice (B), will make it so the individual is unable to comprehend speech.
A stroke affecting the arcuate fasciculus, choice (C), will result in an
inability to repeat words heard but spontaneous language production is
intact. The superior temporal gyrus, choice (D), is where Wernicke's area
is located.)
Each individual in a group of teenagers is asked to estimate the height of
a tree. One individual estimates the height to be 25 feet, but after
discussing with the group is convinced that the height is likely closer to
40 feet. Which type of conformity is seen here?
,■Obedience
■Identification
■Internalization
■Compliance
- ANS - Internalization (Internalization refers to the type of conformity in
which an individual changes her outward opinion to match the group and
also personally agrees with those ideas.)
Which of the following neurotransmitters is associated with both
schizophrenia and Parkinson's disease?
■GABA
■Serotonin
■Dopamine
■Enkephalins
- ANS - Dopamine (Schizophrenia is associated with high levels of
dopamine, or high sensitivity to dopamine. Parkinson's disease is
associated with destruction of the dopaminergic neurons in the basal
ganglia.)
Primary groups differ from secondary groups in that:
■A) primary groups are shorter-lived than secondary groups.
■B) primary groups are larger than secondary groups.
■C) primary groups are formed of stronger bonds than secondary groups.
■D) primary groups are assigned while secondary groups are chosen.
- ANS - C (Primary groups have direct and close bonds between members,
providing warm, personal, and intimate relationships to its members.
,Secondary groups, in contrast, form superficial bonds and tend to last for
a shorter period of time.)
A student is volunteering in a hospital with a stroke center. When asked
what he believes is the prevalence of stroke among those greater than 65
years old, the student states that it is probably about 40% even though
data analysis indicates that it is significantly lower. What accounts for
this error?
■Deductive reasoning
■Representativeness heuristic
■Base rate fallacy
■Confirmation bias
- ANS - Base rate fallacy (The base rate fallacy occurs when prototypical
or stereotypical factors are used for analysis rather than actual data.
Because the student is volunteering in a hospital with a stroke center, he
sees more patients who have experienced a stroke than would be
expected in a hospital without a stroke center. Thus, this experience
changes his perception and results in base rate fallacy. Deductive
reasoning, choice (A), refers to drawing conclusions by integrating
different pieces of evidence. The representativeness heuristic, choice (B),
involves categorization and classification based on how well an
individual example fits its category. Confirmation bias, choice (D), occurs
when a person only seeks information that reinforces his or her
opinions.)
Why are triacylglycerols used in the human body for energy storage?
■A) They are highly hydrated, and therefore can store lots of energy.
■B) They always have short fatty acid chains, for easy access by
metabolic enzymes.
, ■C) The carbon atoms of the fatty acid chains are highly reduced, and
therefore yield more energy upon oxidation.
■D) Polysaccharides, which would actually be a better energy storage
form, would dissolve in the body.
- ANS - C (Triacylglycerols are highly hydrophobic and therefore not
highly hydrated (which would add extra weight from the water of
hydration, taking away from the energy density of these molecules),
eliminating choice (A). The fatty acid chains produce twice as much
energy as polysaccharides during oxidation because they are highly
reduced. The fatty acid chains vary in length and saturation.)
Prolonged vitamin B12 deficiency can be associated with subacute
combined degeneration of the spinal cord. Patients with this disease have
difficulty walking because they lose the ability to feel where their feet are
in space. This represents a loss of:
■vestibular sense.
■kinesthetic sense.
■parallel processing.
■feature detection.
- ANS - Kinesthetic sense (Kinesthetic sense, or proprioception, refers to
the ability to tell where body parts are in three-dimensional space. The
sensors for proprioception are found predominantly in the muscles and
joints. Loss of vestibular sense, choice (A), would also cause difficulty
walking, but this would be due to a sense of dizziness or vertigo, not an
inability to feel one's feet.)
Which of the following is/are function(s) of NADPH in the cell?
