Biology Paper 1 ACTUAL EXAM TEST QUESTIONS
& ANSWERS (A+ GRADED 100% VERIFIED) 2025
LATEST!!
Instructions: Choose the correct answer for each question. The correct answer is marked with
.
Topic: Cell Biology
1. What is the function of the nucleus?
A) Protein synthesis
B) Controls cell activities
C) Site of aerobic respiration
D) Contains cell sap
2. Which sub-cellular structure is found in plant cells but not in animal cells?
A) Cell membrane
B) Mitochondria
C) Chloroplast
D) Ribosome
3. What is the process by which particles spread from an area of high concentration to an
area of low concentration?
A) Osmosis
B) Active transport
C) Diffusion
D) Mitosis
4. Which type of solution has a higher solute concentration than the cell?
A) Hypotonic
B) Hypertonic
C) Isotonic
D) Osmotic
5. What is the movement of water across a partially permeable membrane called?
A) Diffusion
B) Active transport
, C) Osmosis
D) Plasmolysis
6. Which process requires energy to move substances against a concentration gradient?
A) Osmosis
B) Diffusion
C) Active transport
D) Filtration
7. What is the name given to the division of a cell to form two identical daughter cells?
A) Meiosis
B) Mitosis
C) Differentiation
D) Binary fission
8. Which type of cell is undifferentiated and can become any type of cell?
A) Stem cell
B) Muscle cell
C) Nerve cell
D) Red blood cell
9. In which stage of the cell cycle does the cell grow and replicate its DNA?
A) Mitosis
B) Cytokinesis
C) Interphase
D) Prophase
10. What is the function of ribosomes?
A) Lipid synthesis
B) Protein synthesis
C) ATP production
D) Transport of proteins
Topic: Organisation
11. What is the basic building block of a protein?
A) Glycerol
B) Fatty acids
C) Amino acids
D) Nucleotides
, 12. Which enzyme breaks down starch into maltose?
A) Protease
B) Lipase
C) Amylase
D) Sucrase
13. Where is bile produced?
A) Gallbladder
B) Stomach
C) Liver
D) Pancreas
14. What is the function of bile?
A) To digest fats
B) To neutralise stomach acid and emulsify fats
C) To digest proteins
D) To absorb nutrients
15. Which blood vessel carries oxygenated blood away from the heart?
A) Vein
B) Artery
C) Capillary
D) Venule
16. Which chamber of the heart receives deoxygenated blood from the body?
A) Left atrium
B) Left ventricle
C) Right atrium
D) Right ventricle
17. What is the name of the small air sacs in the lungs where gas exchange occurs?
A) Bronchi
B) Bronchioles
C) Alveoli
D) Trachea
18. Which component of blood is responsible for clotting?
A) Red blood cells
B) White blood cells
& ANSWERS (A+ GRADED 100% VERIFIED) 2025
LATEST!!
Instructions: Choose the correct answer for each question. The correct answer is marked with
.
Topic: Cell Biology
1. What is the function of the nucleus?
A) Protein synthesis
B) Controls cell activities
C) Site of aerobic respiration
D) Contains cell sap
2. Which sub-cellular structure is found in plant cells but not in animal cells?
A) Cell membrane
B) Mitochondria
C) Chloroplast
D) Ribosome
3. What is the process by which particles spread from an area of high concentration to an
area of low concentration?
A) Osmosis
B) Active transport
C) Diffusion
D) Mitosis
4. Which type of solution has a higher solute concentration than the cell?
A) Hypotonic
B) Hypertonic
C) Isotonic
D) Osmotic
5. What is the movement of water across a partially permeable membrane called?
A) Diffusion
B) Active transport
, C) Osmosis
D) Plasmolysis
6. Which process requires energy to move substances against a concentration gradient?
A) Osmosis
B) Diffusion
C) Active transport
D) Filtration
7. What is the name given to the division of a cell to form two identical daughter cells?
A) Meiosis
B) Mitosis
C) Differentiation
D) Binary fission
8. Which type of cell is undifferentiated and can become any type of cell?
A) Stem cell
B) Muscle cell
C) Nerve cell
D) Red blood cell
9. In which stage of the cell cycle does the cell grow and replicate its DNA?
A) Mitosis
B) Cytokinesis
C) Interphase
D) Prophase
10. What is the function of ribosomes?
A) Lipid synthesis
B) Protein synthesis
C) ATP production
D) Transport of proteins
Topic: Organisation
11. What is the basic building block of a protein?
A) Glycerol
B) Fatty acids
C) Amino acids
D) Nucleotides
, 12. Which enzyme breaks down starch into maltose?
A) Protease
B) Lipase
C) Amylase
D) Sucrase
13. Where is bile produced?
A) Gallbladder
B) Stomach
C) Liver
D) Pancreas
14. What is the function of bile?
A) To digest fats
B) To neutralise stomach acid and emulsify fats
C) To digest proteins
D) To absorb nutrients
15. Which blood vessel carries oxygenated blood away from the heart?
A) Vein
B) Artery
C) Capillary
D) Venule
16. Which chamber of the heart receives deoxygenated blood from the body?
A) Left atrium
B) Left ventricle
C) Right atrium
D) Right ventricle
17. What is the name of the small air sacs in the lungs where gas exchange occurs?
A) Bronchi
B) Bronchioles
C) Alveoli
D) Trachea
18. Which component of blood is responsible for clotting?
A) Red blood cells
B) White blood cells
