ATI TEAS REAdIng CompREhEnSIon ExAm (20 QuESTIonS) QuESTIonS
And AnSWERS WITh RATIonALES/gRAdEd A+/2026 updATE/100%
CoRRECT /InSTAnT doWnLoAd
Passage 1 (Questions 1–4)
The kidneys are two bean-shaped organs located just below the rib cage on either side of the
spine. Each kidney contains approximately one million tiny filtering units called nephrons. The
primary function of the kidneys is to filter waste products, excess water, and electrolytes
from the blood to form urine. Kidneys also play a vital role in regulating blood pressure,
producing red blood cells, and maintaining acid-base balance. When kidney function declines
below 15 percent, dialysis or transplantation becomes necessary.
Question 1
What is the main idea of this passage?
A) The kidneys are located below the rib cage.
B) Nephrons are the filtering units of the kidneys.
C) The kidneys perform multiple essential functions including filtration, blood pressure
regulation, and red blood cell production.
D) Dialysis is required when kidney function declines below 10 percent.
Answer: C) The kidneys perform multiple essential functions including filtration, blood
pressure regulation, and red blood cell production.
Rationale: The passage lists several functions (filtration, blood pressure regulation, RBC
production, acid-base balance) and ends with the consequence of severe decline. Location
and nephrons are supporting details.
, Question 2
According to the passage, what is the role of nephrons?
A) To regulate blood pressure
B) To filter waste from the blood
C) To produce red blood cells
D) To maintain acid-base balance
Answer: B) To filter waste from the blood
Rationale: The passage states that nephrons are “tiny filtering units.” The other functions are
attributed to the kidneys as a whole.
Question 3
What can be inferred about a patient with kidney function at 10 percent?
A) The patient’s kidneys are working normally.
B) The patient likely requires dialysis or a transplant.
C) The patient has no waste products in the blood.
D) The patient does not need medical follow-up.
Answer: B) The patient likely requires dialysis or a transplant.
Rationale: The passage states that when function declines below 15 percent, dialysis or
transplant becomes necessary. Ten percent is below that threshold.
Question 4
The author’s primary purpose is to:
A) Persuade readers to donate kidneys
And AnSWERS WITh RATIonALES/gRAdEd A+/2026 updATE/100%
CoRRECT /InSTAnT doWnLoAd
Passage 1 (Questions 1–4)
The kidneys are two bean-shaped organs located just below the rib cage on either side of the
spine. Each kidney contains approximately one million tiny filtering units called nephrons. The
primary function of the kidneys is to filter waste products, excess water, and electrolytes
from the blood to form urine. Kidneys also play a vital role in regulating blood pressure,
producing red blood cells, and maintaining acid-base balance. When kidney function declines
below 15 percent, dialysis or transplantation becomes necessary.
Question 1
What is the main idea of this passage?
A) The kidneys are located below the rib cage.
B) Nephrons are the filtering units of the kidneys.
C) The kidneys perform multiple essential functions including filtration, blood pressure
regulation, and red blood cell production.
D) Dialysis is required when kidney function declines below 10 percent.
Answer: C) The kidneys perform multiple essential functions including filtration, blood
pressure regulation, and red blood cell production.
Rationale: The passage lists several functions (filtration, blood pressure regulation, RBC
production, acid-base balance) and ends with the consequence of severe decline. Location
and nephrons are supporting details.
, Question 2
According to the passage, what is the role of nephrons?
A) To regulate blood pressure
B) To filter waste from the blood
C) To produce red blood cells
D) To maintain acid-base balance
Answer: B) To filter waste from the blood
Rationale: The passage states that nephrons are “tiny filtering units.” The other functions are
attributed to the kidneys as a whole.
Question 3
What can be inferred about a patient with kidney function at 10 percent?
A) The patient’s kidneys are working normally.
B) The patient likely requires dialysis or a transplant.
C) The patient has no waste products in the blood.
D) The patient does not need medical follow-up.
Answer: B) The patient likely requires dialysis or a transplant.
Rationale: The passage states that when function declines below 15 percent, dialysis or
transplant becomes necessary. Ten percent is below that threshold.
Question 4
The author’s primary purpose is to:
A) Persuade readers to donate kidneys
