PCAT EXAM|VERIFIED QUESTIONS AND CORRECT DETAILED
ANSWERS|RATED AND GRADED A+ NEW UPDATE| 2026/2027
Centers for regulating hunger, sleep, thirst, body temperature, water balance, and blood pressure are
found in the - ANSWER✔ hypothalamus
A patient's anterior pituitary gland is removed due to the presence of a malignant tumor. Plasma
concentration of which of the following hormones would be LEAST affected following surgery? -
ANSWER✔ insulin
red-green color blindness is a sex-linked recessive trait. What is the probability that a boy born to an
unaffected man and a carrier woman will be color bind? - ANSWER✔ 1/2
A patient who has gained 40 lbs in the past 3 months goes to her physician with complaints of fatigue.
She is found to have a goiter and a decreased metabolic rate. Based on this information, the patient
most likely has a deficiency of... - ANSWER✔ thyroxine
Which of the following statements about the heart is true? - ANSWER✔ A. Both the superior and
inferior vena cava route blood into the right atrium.
Marfan syndrome is an inherited disorder with a deleterious effect on the connective protein fibrillin.
Which of the following is LEAST likely a symptom of this disorder? - ANSWER✔ peripheral neuropathy
; because it is composed of nervous tissue rather than connective tissue
In the menstrual cycle, what is triggered by a surge in LH? - ANSWER✔ ovulation
In a eukaryotic cell, which organelle's primary function is protein synthesis? - ANSWER✔ ribosome
Which of the following can be absorbed in the STOMACH? - ANSWER✔ alcohol and certain drugs;
amino acids, monosaccharides, and small fatty acids must be absorbed by the small intestine
, what path does oxygen follow when traveling through the respiratory structures? - ANSWER✔
external nares (nostrils)> nasal cavity> internal nares> pharynx> larynx> trachea> bronchi> bronchioles>
alveoli
Which of the following pairs of words best describes the autonomic nervous system? - ANSWER✔
sympathetic and parasympathetic
The 5 types of immunoglobulins are secreted from which type of cell? - ANSWER✔ differentiated B
lymphocytes
which of the following is not part of the AXIAL skeleton? - ANSWER✔ pelvis
compared to inhaled air in the alveoli, the partial pressures of carbon dioxide in the pulmonary artery
is... - ANSWER✔ greater
If 18O labeled glucose is given to a human, where is the label most likely to appear?
A. Exhaled O2
B. Exhaled CO2
C. Exhaled H2O
D. Intracellular ATP - ANSWER✔ b) exhaled CO2
Large molecules exit the cell by the process known as ? - ANSWER✔ exocytosis
If a patient with high blood glucose levels accidentally took an overdose of insulin, which of the
following would occur? - ANSWER✔ convulsions due to decreased blood glucose concentrations
Which of the following is true concerning a sex-linked lethal recessive trait? - ANSWER✔ it will cause
death primarily in males
which of the following is not reabsorbed from the tubules of the nephron? - ANSWER✔ proteins
ANSWERS|RATED AND GRADED A+ NEW UPDATE| 2026/2027
Centers for regulating hunger, sleep, thirst, body temperature, water balance, and blood pressure are
found in the - ANSWER✔ hypothalamus
A patient's anterior pituitary gland is removed due to the presence of a malignant tumor. Plasma
concentration of which of the following hormones would be LEAST affected following surgery? -
ANSWER✔ insulin
red-green color blindness is a sex-linked recessive trait. What is the probability that a boy born to an
unaffected man and a carrier woman will be color bind? - ANSWER✔ 1/2
A patient who has gained 40 lbs in the past 3 months goes to her physician with complaints of fatigue.
She is found to have a goiter and a decreased metabolic rate. Based on this information, the patient
most likely has a deficiency of... - ANSWER✔ thyroxine
Which of the following statements about the heart is true? - ANSWER✔ A. Both the superior and
inferior vena cava route blood into the right atrium.
Marfan syndrome is an inherited disorder with a deleterious effect on the connective protein fibrillin.
Which of the following is LEAST likely a symptom of this disorder? - ANSWER✔ peripheral neuropathy
; because it is composed of nervous tissue rather than connective tissue
In the menstrual cycle, what is triggered by a surge in LH? - ANSWER✔ ovulation
In a eukaryotic cell, which organelle's primary function is protein synthesis? - ANSWER✔ ribosome
Which of the following can be absorbed in the STOMACH? - ANSWER✔ alcohol and certain drugs;
amino acids, monosaccharides, and small fatty acids must be absorbed by the small intestine
, what path does oxygen follow when traveling through the respiratory structures? - ANSWER✔
external nares (nostrils)> nasal cavity> internal nares> pharynx> larynx> trachea> bronchi> bronchioles>
alveoli
Which of the following pairs of words best describes the autonomic nervous system? - ANSWER✔
sympathetic and parasympathetic
The 5 types of immunoglobulins are secreted from which type of cell? - ANSWER✔ differentiated B
lymphocytes
which of the following is not part of the AXIAL skeleton? - ANSWER✔ pelvis
compared to inhaled air in the alveoli, the partial pressures of carbon dioxide in the pulmonary artery
is... - ANSWER✔ greater
If 18O labeled glucose is given to a human, where is the label most likely to appear?
A. Exhaled O2
B. Exhaled CO2
C. Exhaled H2O
D. Intracellular ATP - ANSWER✔ b) exhaled CO2
Large molecules exit the cell by the process known as ? - ANSWER✔ exocytosis
If a patient with high blood glucose levels accidentally took an overdose of insulin, which of the
following would occur? - ANSWER✔ convulsions due to decreased blood glucose concentrations
Which of the following is true concerning a sex-linked lethal recessive trait? - ANSWER✔ it will cause
death primarily in males
which of the following is not reabsorbed from the tubules of the nephron? - ANSWER✔ proteins
