OAT Form 412 {Optometry Admission
Test) Exam With Actual Questions &
Verified Answers,Plus
Rationales/Expert Verified For
Guaranteed Pass Graded A+/2026
/Latest Update/Instant Download Pdf
Biology Section
1. Which organelle is primarily responsible for ATP production in eukaryotic
cells?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Endoplasmic reticulum
Rationale: The mitochondrion generates ATP via oxidative
phosphorylation during cellular respiration.
2. Which phase of mitosis involves the separation of sister chromatids?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Rationale: During anaphase, sister chromatids separate and move to
opposite poles of the cell.
3. Which of the following describes an enzyme’s function?
A. It raises activation energy.
B. It acts as a product.
C. It lowers activation energy.
, D. It halts metabolic reactions.
Rationale: Enzymes function as biological catalysts by lowering activation
energy to speed up reactions.
4. Which process results in the production of four genetically unique
haploid cells?
A. Mitosis
B. Meiosis
C. Binary fission
D. Budding
Rationale: Meiosis produces four genetically distinct haploid gametes,
contributing to genetic diversity.
5. What is the function of the Golgi apparatus?
A. Energy production
B. DNA replication
C. Modification and packaging of proteins
D. Ribosome synthesis
Rationale: The Golgi apparatus modifies, sorts, and packages proteins for
secretion or use in the cell.
6. Which of the following is an example of a polysaccharide?
A. Glucose
B. Fructose
C. Maltose
D. Glycogen
Rationale: Glycogen is a storage polysaccharide composed of many
glucose units linked together.
7. What is the main structural component of plant cell walls?
A. Glycogen
B. Cellulose
C. Chitin
D. Peptidoglycan
Rationale: Cellulose, a polysaccharide of glucose, provides rigidity to
plant cell walls.
, 8. Which of the following best defines osmosis?
A. Movement of solute across membrane
B. Active transport
C. Movement of water across a semipermeable membrane
D. Endocytosis
Rationale: Osmosis involves the passive movement of water across a
membrane from low to high solute concentration.
9. What type of RNA carries amino acids to the ribosome?
A. mRNA
B. rRNA
C. tRNA
D. miRNA
Rationale: Transfer RNA (tRNA) carries amino acids to the ribosome
during translation.
10.Which of the following is an example of a negative feedback mechanism?
A. Blood clotting
B. Labor contractions
C. Regulation of blood glucose by insulin
D. Nerve impulse generation
Rationale: Insulin decreases blood glucose when it is high, restoring
homeostasis—a negative feedback loop.
General Chemistry Section
11.Which of the following describes an ionic bond?
A. Sharing of electrons
B. Transfer of electrons
C. Overlapping orbitals
D. Covalent interaction
Rationale: Ionic bonds result from the transfer of electrons between
atoms with large electronegativity differences.
12.The pH of a solution with [H⁺] = 1 × 10⁻⁴ M is:
A. 2
Test) Exam With Actual Questions &
Verified Answers,Plus
Rationales/Expert Verified For
Guaranteed Pass Graded A+/2026
/Latest Update/Instant Download Pdf
Biology Section
1. Which organelle is primarily responsible for ATP production in eukaryotic
cells?
A. Nucleus
B. Ribosome
C. Mitochondrion
D. Endoplasmic reticulum
Rationale: The mitochondrion generates ATP via oxidative
phosphorylation during cellular respiration.
2. Which phase of mitosis involves the separation of sister chromatids?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Rationale: During anaphase, sister chromatids separate and move to
opposite poles of the cell.
3. Which of the following describes an enzyme’s function?
A. It raises activation energy.
B. It acts as a product.
C. It lowers activation energy.
, D. It halts metabolic reactions.
Rationale: Enzymes function as biological catalysts by lowering activation
energy to speed up reactions.
4. Which process results in the production of four genetically unique
haploid cells?
A. Mitosis
B. Meiosis
C. Binary fission
D. Budding
Rationale: Meiosis produces four genetically distinct haploid gametes,
contributing to genetic diversity.
5. What is the function of the Golgi apparatus?
A. Energy production
B. DNA replication
C. Modification and packaging of proteins
D. Ribosome synthesis
Rationale: The Golgi apparatus modifies, sorts, and packages proteins for
secretion or use in the cell.
6. Which of the following is an example of a polysaccharide?
A. Glucose
B. Fructose
C. Maltose
D. Glycogen
Rationale: Glycogen is a storage polysaccharide composed of many
glucose units linked together.
7. What is the main structural component of plant cell walls?
A. Glycogen
B. Cellulose
C. Chitin
D. Peptidoglycan
Rationale: Cellulose, a polysaccharide of glucose, provides rigidity to
plant cell walls.
, 8. Which of the following best defines osmosis?
A. Movement of solute across membrane
B. Active transport
C. Movement of water across a semipermeable membrane
D. Endocytosis
Rationale: Osmosis involves the passive movement of water across a
membrane from low to high solute concentration.
9. What type of RNA carries amino acids to the ribosome?
A. mRNA
B. rRNA
C. tRNA
D. miRNA
Rationale: Transfer RNA (tRNA) carries amino acids to the ribosome
during translation.
10.Which of the following is an example of a negative feedback mechanism?
A. Blood clotting
B. Labor contractions
C. Regulation of blood glucose by insulin
D. Nerve impulse generation
Rationale: Insulin decreases blood glucose when it is high, restoring
homeostasis—a negative feedback loop.
General Chemistry Section
11.Which of the following describes an ionic bond?
A. Sharing of electrons
B. Transfer of electrons
C. Overlapping orbitals
D. Covalent interaction
Rationale: Ionic bonds result from the transfer of electrons between
atoms with large electronegativity differences.
12.The pH of a solution with [H⁺] = 1 × 10⁻⁴ M is:
A. 2
