DENTAL ADMISSION TEST (DAT)
REVIEW EXAM ||questions and
answers with rationales/graded
A+/2026 update/100% correct
/instant download
2026-2027 UPDATED FULL-LENGTH TOPIC TEST
Total Questions: 85
Sections Covered:
• Survey of Natural Sciences (Biology, General Chemistry, Organic
Chemistry)
• Perceptual Ability (Keyhole & TFE – selected)
• Reading Comprehension (concepts)
• Quantitative Reasoning
Instructions: Choose the best answer. Highlighted option = correct answer.
SECTION 1: BIOLOGY (30 Questions)
1. Cellular & Molecular Biology
1. Which of the following best describes the function of the smooth endoplasmic
reticulum?
• A) Protein synthesis
• B) ATP production
• C) Lipid synthesis and detoxification
• D) Packaging of secretory proteins
, Rationale: Smooth ER synthesizes lipids, phospholipids, and steroids; it also
detoxifies drugs/poisons. Rough ER has ribosomes for protein synthesis.
2. During DNA replication, which enzyme synthesizes the RNA primer?
• A) DNA polymerase III
• B) Helicase
• C) Primase
• D) Ligase
Rationale: Primase (RNA primase) lays down RNA primers to provide a 3'-OH
group for DNA polymerases to initiate synthesis.
3. A cell with a diploid number of 24 undergoes meiosis. How many chromosomes
will each daughter cell have at the end of meiosis II?
• A) 6
• B) 12
• C) 24
• D) 48
Rationale: Meiosis reduces ploidy from diploid (2n=24) to haploid (n=12) after
meiosis I; meiosis II separates sister chromatids but maintains n.
4. Which of the following mutations is most likely to cause a frameshift?
• A) Substitution of adenine for guanine
• B) Insertion of a single nucleotide
• C) Deletion of three consecutive nucleotides
• D) Inversion of a codon
Rationale: Insertions or deletions not in multiples of three shift the reading frame,
altering all downstream amino acids.
2. Genetics & Evolution
5. In a cross between two heterozygous tall pea plants (Tt × Tt), what is the
probability of producing a short plant?
REVIEW EXAM ||questions and
answers with rationales/graded
A+/2026 update/100% correct
/instant download
2026-2027 UPDATED FULL-LENGTH TOPIC TEST
Total Questions: 85
Sections Covered:
• Survey of Natural Sciences (Biology, General Chemistry, Organic
Chemistry)
• Perceptual Ability (Keyhole & TFE – selected)
• Reading Comprehension (concepts)
• Quantitative Reasoning
Instructions: Choose the best answer. Highlighted option = correct answer.
SECTION 1: BIOLOGY (30 Questions)
1. Cellular & Molecular Biology
1. Which of the following best describes the function of the smooth endoplasmic
reticulum?
• A) Protein synthesis
• B) ATP production
• C) Lipid synthesis and detoxification
• D) Packaging of secretory proteins
, Rationale: Smooth ER synthesizes lipids, phospholipids, and steroids; it also
detoxifies drugs/poisons. Rough ER has ribosomes for protein synthesis.
2. During DNA replication, which enzyme synthesizes the RNA primer?
• A) DNA polymerase III
• B) Helicase
• C) Primase
• D) Ligase
Rationale: Primase (RNA primase) lays down RNA primers to provide a 3'-OH
group for DNA polymerases to initiate synthesis.
3. A cell with a diploid number of 24 undergoes meiosis. How many chromosomes
will each daughter cell have at the end of meiosis II?
• A) 6
• B) 12
• C) 24
• D) 48
Rationale: Meiosis reduces ploidy from diploid (2n=24) to haploid (n=12) after
meiosis I; meiosis II separates sister chromatids but maintains n.
4. Which of the following mutations is most likely to cause a frameshift?
• A) Substitution of adenine for guanine
• B) Insertion of a single nucleotide
• C) Deletion of three consecutive nucleotides
• D) Inversion of a codon
Rationale: Insertions or deletions not in multiples of three shift the reading frame,
altering all downstream amino acids.
2. Genetics & Evolution
5. In a cross between two heterozygous tall pea plants (Tt × Tt), what is the
probability of producing a short plant?
