A marked increase in temperature reduces rate of the enzyme catalyzed reaction by _________.

Destroying the tertiary structure of enzyme

Decreasing the kinetic energy of substrate

Changing the pH of reaction media

Decreasing the activation energy

Which of the following truly describe the Activation Energy of an Enzyme?

Minimum energy required to start a chemical reaction

Total energy of the reaction system

Energy lost during the chemical reaction

Energy difference between the chemical potential energy of the reactants and the products

How does an enzyme increase the rate of a reaction?

By bringing the reaction molecules into precise orientation

By increasing the rate of random collisions of molecules

By shifting the point of equilibrium of the reaction

By supplying the energy required to start the reaction

Naturally, enzymes increase reaction rate without:

Converting substrate into products

Forming enzyme-substrate complex

Darwin believed in perceived unity of life with ______ related though decent from ______________.

all organisms: common ancestors

few organisms: different ancestors

few organisms: common ancestors

all organisms: different ancestors

Which of the following changes occur when skeletal muscles contract?

The Z- lines move further apart

The H- zone becomes more visible

Which one of the following statements is correct for troponin?

It consists of three polypeptide chains

It has greater affinity with Calcium ions than myosin

Which one of the following statements is incorrect about circulatory system?

All arteries carry oxygenated blood.

All arteries carry blood away from the heart.

All veins carry blood towards the heart.

All veins carry blood at low pressure.

Bicuspid valve guards the opening between ___ in a heart.

Right Atrium and Right Ventricle

What are antigens, in the context of immune recognition?

Cell surface proteins and Oligosaccharides

Hormone released during infection

Self-identifying lipids in plasma

Primary immune response is characterized by:

Slow and low antibody production

Expansion and contraction of the lungs is accomplished by

Diaphragm & intercostal muscles

Chymotrypsin present in pancreatic juice is responsible for __________.

Digestion of proteins into smaller peptides

Digestion of lipids to glycerol and fatty acids

Digestion of DNA and RNA into nucleotides

Digestion of polysaccharides into maltose or glucose

SZABMU MDCAT 2026 Paper - Practice the Original MCQs Online

MDCAT 2026 · Islamabad

MDCAT 2026 Islamabad (SZABMU) Paper

Attempt the complete official MDCAT 2026 paper online — every question with the official answer key, and your score the moment you submit.

188MCQs Live

456Recalls Sent

FreeNo sign-up

No registration · No login · Answer shown after every MCQ

Choose how you want to attempt

Or practise one subject

Question 1

Jump to any question

End test and see result

0

out of 0

Share my score on WhatsApp

Help build this paper

Remember an MCQ from the Islamabad paper? Add it.

Every question you add helps the next student. Add one at a time — the form stays open. Questions are reviewed before they go live.

+ Add an MCQ you remember

Province

Subject

The question

Option A

Option B

Option C

Option D

Correct answer (if you know it)

Your name (optional)

Next steps

Aggregate Calculator 2026MDCAT + FSc + Matric weightage All Provinces' PapersPunjab, Sindh, KPK, Islamabad, Balochistan, AJK MDCAT 2026 Guess Paper180 most-expected MCQs Order the MDCAT BookFree home delivery in Pakistan

Official MDCAT 2026 paper with the official answer key, published for practice by the mbbs.com.pk team.

MBBS.Com.Pk

SZABMU MDCAT 2026 Paper – Practice the Original MCQs Online

MDCAT 2026 Islamabad (SZABMU) Paper

Remember an MCQ from the Islamabad paper? Add it.

MDCAT & NUMS

Admissions

Books Shop

MDCAT 2026 Islamabad (SZABMU) Paper

Remember an MCQ from the Islamabad paper? Add it.

Aggregate se pehle, apna score confirm karein