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Competitive Exam Practice

MDCAT Biology Questions

Practise biology (science) for the Medical and Dental College 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

0 / 10 answered Take a timed mock test

  1. Q1.Bile is produced by the:

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    Answer: A — Liver

    Bile is made in the liver and stored in the gall bladder.

  2. Q2.Which blood vessels carry blood away from the heart?

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    Answer: A — Arteries

    Arteries carry blood away from the heart.

  3. Q3.The basic unit of heredity is the:

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    Answer: B — Gene

    Genes are segments of DNA that carry hereditary information.

  4. Q4.Gas exchange in the lungs takes place in the:

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    Answer: D — Alveoli

    Thin-walled alveoli allow oxygen and CO₂ to diffuse.

  5. Q5.Malaria is caused by:

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    Answer: C — Plasmodium (a protozoan)

    Plasmodium parasites are spread by female Anopheles mosquitoes.

  6. Q6.Xylem in plants transports:

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    Answer: C — Water and minerals

    Xylem carries water and minerals upward; phloem carries food.

  7. Q7.Which enzyme in saliva begins starch digestion?

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    Answer: B — Salivary amylase (ptyalin)

    Salivary amylase breaks starch into maltose.

  8. Q8.The father of genetics is:

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    Answer: D — Gregor Mendel

    Mendel’s pea plant experiments established the laws of inheritance.

  9. Q9.Which blood cells help in clotting?

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    Answer: C — Platelets

    Platelets (thrombocytes) form clots.

  10. Q10.Antibiotics are effective against:

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    Answer: A — Bacteria

    Antibiotics target bacteria, not viruses.

Free MDCAT Biology Questions by pGento

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 MDCAT

Medical and Dental College Admission Test — conducted by Pakistan Medical & Dental Council (PM&DC). Admission test for medical and dental colleges in Pakistan.

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.

MDCAT practice topics

TopicSectionQuestion source
BiologyScienceQuestion bank
ChemistryScienceCalculated + question bank
PhysicsScienceCalculated + question bank
English GrammarEnglishQuestion bank

Frequently asked questions

Bile is produced by the:
Answer: A — Liver. Bile is made in the liver and stored in the gall bladder.
Which blood vessels carry blood away from the heart?
Answer: A — Arteries. Arteries carry blood away from the heart.
The basic unit of heredity is the:
Answer: B — Gene. Genes are segments of DNA that carry hereditary information.
Are these real past exam papers?
No. Every question is an original practice question written in the style, syllabus and difficulty of the exam, with a worked explanation. The site is not affiliated with any exam body.
MDCAT Biology Questions

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