ANSWERS (VERIFIED ANSWERS) Q&A 2027
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1. Which organelle is primarily responsible for producing ATP
in the cell?
A. Nucleus
B. Ribosome
C. Golgi apparatus
D. Mitochondria
Rationale: Mitochondria generate ATP through cellular
respiration and are known as the powerhouse of the cell.
2. The basic structural and functional unit of the human body
is the:
A. Tissue
B. Organ
C. Cell
D. System
Rationale: Cells are the smallest living units capable of
performing essential life functions.
3. Which macromolecule is the main source of immediate
energy for cells?
,A. Proteins
B. Lipids
C. Nucleic acids
D. Carbohydrates
Rationale: Carbohydrates are rapidly broken down into glucose
for energy production.
4. DNA is located primarily in which cellular structure?
A. Cytoplasm
B. Ribosome
C. Nucleus
D. Lysosome
Rationale: The nucleus contains genetic material that controls
cellular activities.
5. The movement of water across a selectively permeable
membrane is called:
A. Diffusion
B. Active transport
C. Filtration
D. Osmosis
Rationale: Osmosis is the movement of water from an area of
lower solute concentration to higher solute concentration.
,6. Which tissue type covers body surfaces and lines internal
organs?
A. Muscle tissue
B. Nervous tissue
C. Connective tissue
D. Epithelial tissue
Rationale: Epithelial tissue provides protection, absorption, and
secretion.
7. The main function of red blood cells is to:
A. Fight infection
B. Form antibodies
C. Transport oxygen
D. Produce hormones
Rationale: Red blood cells contain hemoglobin, which carries
oxygen throughout the body.
8. Which blood component is responsible for clot formation?
A. Plasma
B. White blood cells
C. Red blood cells
D. Platelets
Rationale: Platelets help stop bleeding by forming blood clots.
, 9. The functional unit of the kidney is the:
A. Alveolus
B. Neuron
C. Nephron
D. Villus
Rationale: Nephrons filter blood and produce urine.
10. Which body system regulates hormones?
A. Nervous system
B. Digestive system
C. Endocrine system
D. Skeletal system
Rationale: The endocrine system produces hormones that
regulate body processes.
11. The normal site of gas exchange in the lungs is the:
A. Bronchi
B. Trachea
C. Alveoli
D. Diaphragm
Rationale: Alveoli allow oxygen and carbon dioxide exchange
between air and blood.