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DAT Biology Questions
Practise biology (science) for the Dental Admission Test: 10 multiple-choice questions, each with the correct answer and a worked explanation. Click an option to check it, or “New questions” for another set.
Biology practice
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Q1.The father of genetics is:
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Answer: A — Gregor Mendel
Mendel’s pea plant experiments established the laws of inheritance.
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Q2.Insulin is secreted by the:
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Answer: D — Pancreas
Beta cells of the pancreatic islets of Langerhans secrete insulin.
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Q3.Which enzyme in saliva begins starch digestion?
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Answer: B — Salivary amylase (ptyalin)
Salivary amylase breaks starch into maltose.
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Q4.DNA is mainly found in the cell’s:
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Answer: B — Nucleus
Most DNA is in the nucleus (some in mitochondria and chloroplasts).
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Q5.Which organelle synthesises proteins?
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Answer: D — Ribosome
Ribosomes translate mRNA into protein.
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Q6.Xylem in plants transports:
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Answer: A — Water and minerals
Xylem carries water and minerals upward; phloem carries food.
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Q7.Gas exchange in the lungs takes place in the:
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Answer: C — Alveoli
Thin-walled alveoli allow oxygen and CO₂ to diffuse.
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Q8.Which part of the brain controls balance and coordination?
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Answer: D — Cerebellum
The cerebellum coordinates movement and balance.
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Q9.The green pigment in plants is:
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Answer: A — Chlorophyll
Chlorophyll absorbs red and blue light for photosynthesis.
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Q10.The powerhouse of the cell is the:
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Answer: D — Mitochondrion
Mitochondria produce ATP through cellular respiration.
How to approach biology questions
Learn structure → function links (mitochondria → ATP, nephron → filtration), the major hormones and their glands, and deficiency diseases. Diagrams help with cell organelles and organ systems.
About DAT
Dental Admission Test — conducted by American Dental Association (ADA). Dental school admission test covering natural sciences, perceptual ability, reading and quantitative reasoning.
Original practice questions written for this site in the style and difficulty of each exam’s syllabus. They are not past papers and the site is not affiliated with any exam body. Exam patterns, marking schemes and syllabi change — always check the latest official notification.
DAT practice topics
| Topic | Section | Question source |
|---|---|---|
| Biology | Science | Question bank |
| Chemistry | Science | Calculated + question bank |
| Algebra | Mathematics | Calculated (new numbers every set) |
| Geometry & Mensuration | Mathematics | Calculated (new numbers every set) |