Pharmacy College Admission Test (PCAT)
Practice Exam Verified Questions, Correct
Answers, and Detailed Explanations for
Science Students||Already Graded A+
1. Which organelle is primarily responsible for ATP production in eukaryotic
cells?
A. Ribosome
B. Nucleus
C. Mitochondrion
D. Golgi apparatus
The mitochondrion is the site of oxidative phosphorylation and ATP synthesis.
2. DNA replication occurs during which phase of the cell cycle?
A. G1
B. S
C. G2
D. M
The S (synthesis) phase is when DNA is replicated.
3. Which amino acid is considered nonpolar?
A. Serine
B. Aspartic acid
C. Lysine
D. Valine
Valine has a hydrophobic side chain, making it nonpolar.
4. The functional unit of the kidney is the:
A. Glomerulus
B. Nephron
C. Loop of Henle
D. Collecting duct
The nephron performs filtration, reabsorption, and secretion.
,5. Which hormone lowers blood glucose levels?
A. Glucagon
B. Epinephrine
C. Cortisol
D. Insulin
Insulin promotes glucose uptake into cells, reducing blood glucose.
6. Which macromolecule serves as the primary structural component of cell
membranes?
A. Carbohydrates
B. Proteins
C. Phospholipids
D. Nucleic acids
Phospholipids form the bilayer structure of membranes.
7. Which enzyme breaks down starch into maltose?
A. Pepsin
B. Lipase
C. Amylase
D. Trypsin
Amylase hydrolyzes starch during digestion.
8. Which blood cells are primarily responsible for oxygen transport?
A. Platelets
B. Leukocytes
C. Erythrocytes
D. Plasma cells
Red blood cells contain hemoglobin, which binds oxygen.
9. Which vitamin is fat-soluble?
A. Vitamin B12
B. Vitamin C
C. Vitamin D
, D. Vitamin B6
Vitamins A, D, E, and K are fat-soluble.
10. A mutation that does not change the amino acid sequence is called a:
A. Missense mutation
B. Nonsense mutation
C. Frameshift mutation
D. Silent mutation
Silent mutations alter DNA but not the encoded amino acid.
Chemistry
11. What is the pH of a neutral solution at 25°C?
A. 0
B. 5
C. 7
D. 14
pH 7 represents neutrality.
12. Which bond is formed by the sharing of electrons?
A. Ionic
B. Hydrogen
C. Covalent
D. Metallic
Covalent bonds involve electron sharing.
13. Avogadro’s number is approximately:
A. 3.14 × 10²³
B. 6.02 × 10²³
C. 9.81 × 10²³
D. 1.60 × 10⁻¹⁹
It represents the number of particles in one mole.
Practice Exam Verified Questions, Correct
Answers, and Detailed Explanations for
Science Students||Already Graded A+
1. Which organelle is primarily responsible for ATP production in eukaryotic
cells?
A. Ribosome
B. Nucleus
C. Mitochondrion
D. Golgi apparatus
The mitochondrion is the site of oxidative phosphorylation and ATP synthesis.
2. DNA replication occurs during which phase of the cell cycle?
A. G1
B. S
C. G2
D. M
The S (synthesis) phase is when DNA is replicated.
3. Which amino acid is considered nonpolar?
A. Serine
B. Aspartic acid
C. Lysine
D. Valine
Valine has a hydrophobic side chain, making it nonpolar.
4. The functional unit of the kidney is the:
A. Glomerulus
B. Nephron
C. Loop of Henle
D. Collecting duct
The nephron performs filtration, reabsorption, and secretion.
,5. Which hormone lowers blood glucose levels?
A. Glucagon
B. Epinephrine
C. Cortisol
D. Insulin
Insulin promotes glucose uptake into cells, reducing blood glucose.
6. Which macromolecule serves as the primary structural component of cell
membranes?
A. Carbohydrates
B. Proteins
C. Phospholipids
D. Nucleic acids
Phospholipids form the bilayer structure of membranes.
7. Which enzyme breaks down starch into maltose?
A. Pepsin
B. Lipase
C. Amylase
D. Trypsin
Amylase hydrolyzes starch during digestion.
8. Which blood cells are primarily responsible for oxygen transport?
A. Platelets
B. Leukocytes
C. Erythrocytes
D. Plasma cells
Red blood cells contain hemoglobin, which binds oxygen.
9. Which vitamin is fat-soluble?
A. Vitamin B12
B. Vitamin C
C. Vitamin D
, D. Vitamin B6
Vitamins A, D, E, and K are fat-soluble.
10. A mutation that does not change the amino acid sequence is called a:
A. Missense mutation
B. Nonsense mutation
C. Frameshift mutation
D. Silent mutation
Silent mutations alter DNA but not the encoded amino acid.
Chemistry
11. What is the pH of a neutral solution at 25°C?
A. 0
B. 5
C. 7
D. 14
pH 7 represents neutrality.
12. Which bond is formed by the sharing of electrons?
A. Ionic
B. Hydrogen
C. Covalent
D. Metallic
Covalent bonds involve electron sharing.
13. Avogadro’s number is approximately:
A. 3.14 × 10²³
B. 6.02 × 10²³
C. 9.81 × 10²³
D. 1.60 × 10⁻¹⁹
It represents the number of particles in one mole.
