1. Which of the following is the primary function of the mitochondria?
A. Protein synthesis
B. Energy production
C. Detoxification
D. Ribosome production
Answer: B. Energy production
Rationale: Mitochondria are known as the powerhouse of the cell, as they are primarily involved
in the production of ATP (adenosine triphosphate), which is the cell's main energy source.
2. The largest part of the human brain, responsible for higher functions such as
reasoning, emotions, and memory, is the:
A. Cerebellum
B. Medulla oblongata
C. Cerebrum
D. Thalamus
Answer: C. Cerebrum
Rationale: The cerebrum is the largest part of the brain and is responsible for various functions,
including cognitive abilities, emotions, and memory.
3. Which of the following is not a part of the digestive system?
A. Stomach
B. Liver
C. Kidneys
D. Small intestine
Answer: C. Kidneys
Rationale: The kidneys are part of the urinary system, not the digestive system. The digestive
system includes organs such as the stomach, liver, and small intestine.
4. What is the primary function of the red blood cells?
A. Transport oxygen
B. Produce hormones
, C. Fight infection
D. Clot blood
Answer: A. Transport oxygen
Rationale: Red blood cells are responsible for carrying oxygen from the lungs to the rest of the
body and bringing carbon dioxide back to the lungs for exhalation.
5. Which of the following structures is responsible for the exchange of gases in
the lungs?
A. Bronchi
B. Alveoli
C. Trachea
D. Larynx
Answer: B. Alveoli
Rationale: Alveoli are small air sacs in the lungs where the exchange of gases (oxygen and
carbon dioxide) occurs between the blood and the air.
6. The heart is primarily composed of which type of tissue?
A. Nervous tissue
B. Epithelial tissue
C. Muscular tissue
D. Connective tissue
Answer: C. Muscular tissue
Rationale: The heart is mainly composed of cardiac muscle tissue, which is specialized for
contraction and pumping blood throughout the body.
7. Which hormone regulates the body's metabolism?
A. Insulin
B. Thyroxine
C. Cortisol
D. Progesterone
Answer: B. Thyroxine
Rationale: Thyroxine, produced by the thyroid gland, regulates metabolism by controlling the
rate at which the body converts food into energy.
A. Protein synthesis
B. Energy production
C. Detoxification
D. Ribosome production
Answer: B. Energy production
Rationale: Mitochondria are known as the powerhouse of the cell, as they are primarily involved
in the production of ATP (adenosine triphosphate), which is the cell's main energy source.
2. The largest part of the human brain, responsible for higher functions such as
reasoning, emotions, and memory, is the:
A. Cerebellum
B. Medulla oblongata
C. Cerebrum
D. Thalamus
Answer: C. Cerebrum
Rationale: The cerebrum is the largest part of the brain and is responsible for various functions,
including cognitive abilities, emotions, and memory.
3. Which of the following is not a part of the digestive system?
A. Stomach
B. Liver
C. Kidneys
D. Small intestine
Answer: C. Kidneys
Rationale: The kidneys are part of the urinary system, not the digestive system. The digestive
system includes organs such as the stomach, liver, and small intestine.
4. What is the primary function of the red blood cells?
A. Transport oxygen
B. Produce hormones
, C. Fight infection
D. Clot blood
Answer: A. Transport oxygen
Rationale: Red blood cells are responsible for carrying oxygen from the lungs to the rest of the
body and bringing carbon dioxide back to the lungs for exhalation.
5. Which of the following structures is responsible for the exchange of gases in
the lungs?
A. Bronchi
B. Alveoli
C. Trachea
D. Larynx
Answer: B. Alveoli
Rationale: Alveoli are small air sacs in the lungs where the exchange of gases (oxygen and
carbon dioxide) occurs between the blood and the air.
6. The heart is primarily composed of which type of tissue?
A. Nervous tissue
B. Epithelial tissue
C. Muscular tissue
D. Connective tissue
Answer: C. Muscular tissue
Rationale: The heart is mainly composed of cardiac muscle tissue, which is specialized for
contraction and pumping blood throughout the body.
7. Which hormone regulates the body's metabolism?
A. Insulin
B. Thyroxine
C. Cortisol
D. Progesterone
Answer: B. Thyroxine
Rationale: Thyroxine, produced by the thyroid gland, regulates metabolism by controlling the
rate at which the body converts food into energy.
