Questions & Answers
Browse all 20 questions from the
Human Body and Health Reading Comprehension study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What is the primary function of red blood cells?
-
A
To fight infections
-
B
To carry oxygen
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C
To help blood clot
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D
To produce energy
2
Which organ pumps blood throughout the body?
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A
Lungs
-
B
Brain
-
C
Heart
-
D
Stomach
3
What is the largest organ in the human body?
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A
Liver
-
B
Brain
-
C
Lungs
-
D
Skin
4
What gas do humans inhale that is essential for survival?
-
A
Carbon Dioxide
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B
Oxygen
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C
Nitrogen
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D
Helium
5
Bones provide structure and support for the body. What is the hard, mineralized tissue that makes up bones called?
-
A
Cartilage
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B
Muscle
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C
Periosteum
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D
Osseous tissue
6
Which part of the eye focuses light onto the retina?
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A
Pupil
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B
Iris
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C
Lens
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D
Cornea
7
What is the main function of the digestive system?
-
A
To transport nutrients
-
B
To break down food and absorb nutrients
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C
To remove waste
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D
To produce hormones
8
Which type of nutrient provides the body with energy and helps absorb fat-soluble vitamins?
-
A
Protein
-
B
Vitamins
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C
Fats
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D
Minerals
9
What is the purpose of the immune system?
-
A
To digest food
-
B
To regulate body temperature
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C
To protect the body from disease
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D
To send signals to the brain
10
Where does most of the absorption of nutrients from food take place in the human body?
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A
Stomach
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B
Esophagus
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C
Small intestine
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D
Large intestine
11
What is the primary role of the lungs?
-
A
To filter blood
-
B
To pump blood
-
C
To exchange gases (oxygen and carbon dioxide)
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D
To store food
12
Which mineral is essential for strong bones and teeth?
-
A
Iron
-
B
Potassium
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C
Calcium
-
D
Sodium
13
What is the main function of the brain?
-
A
To produce digestive enzymes
-
B
To control thoughts, emotions, and bodily functions
-
C
To filter waste from the blood
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D
To transport oxygen
14
Which vitamin is primarily synthesized by the skin when exposed to sunlight?
-
A
Vitamin A
-
B
Vitamin C
-
C
Vitamin D
-
D
Vitamin K
15
What is the primary function of the kidneys?
-
A
To digest food
-
B
To pump blood
-
C
To filter waste products from the blood and produce urine
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D
To send nerve impulses
16
Which part of a cell contains the genetic material?
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A
Cytoplasm
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B
Cell membrane
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C
Nucleus
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D
Mitochondrion
17
What is the name of the body's natural defense mechanism against injury or infection?
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A
Circulation
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B
Inflammation
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C
Respiration
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D
Digestion
18
What is the substance that gives blood its red color?
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A
Plasma
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B
Hemoglobin
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C
Platelets
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D
White blood cells
19
Which type of joint allows for the most movement, such as in the shoulder and hip?
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A
Hinge joint
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B
Pivot joint
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C
Ball-and-socket joint
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D
Gliding joint
20
What is the process by which plants produce their own food using sunlight?
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A
Respiration
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B
Transpiration
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C
Photosynthesis
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D
Fermentation
