1Biologywater transport
In roots the apoplast pathway of water is disrupted when water reaches
- A.Plasmodesmata
- B.Cortex
- C.Endodermis
- D.Pith
Answer and explanation locked
Circulation MCQs for MDCAT
3 Circulation questions from real MDCAT past papers (2020), each with the correct answer and a written explanation.
3 questionsBiology
Practice questions
3 more questions in this chapter
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2Biologyblood pressure
Which of the following blood vessels have the highest pressure of blood?
- A.Aorta
- B.Pulmonary arteries
- C.Pulmonary veins
- D.Vena cava
Answer and explanation locked
3Biologyheart chambers
In human heart, the left atrium receives
- A.The superior Vena Cava
- B.The inferior Vena Cava
- C.The coronary sinus
- D.The four pulmonary veins
Answer and explanation locked
How Circulation is examined
Circulation sits in the official PMDC Biology curriculum, the document that defines what can and cannot appear in the 2026 paper. Everything on this page is tagged against that curriculum rather than against a chapter list invented for a website, which is why a chapter here matches the chapter your textbook and your teacher use.
Biology carries 81 of the 180 questions in the real paper - 45% of your MDCAT score, and the MDCAT is half your merit aggregate. PMDC does not publish how those 81questions are split across chapters, so no honest page can tell you “expect four from Circulation”. What the archive can tell you is what actually appeared: 3 Circulation questions out of the 77 Biology questions digitised so far.
Work through them with the explanations rather than checking answer letters. The explanation says why the other three options are wrong, and distractors get reused across years far more reliably than whole questions do.
Frequently asked questions
How many Circulation MCQs are on this page?
3, drawn from one past paper - the 2020 paper. Every one is transcribed from the real paper rather than written to look like a past paper question, and each carries the correct answer with a written explanation. 0 of them are readable in full without an account.
Is Circulation in the MDCAT 2026 syllabus?
Yes. Circulation is a chapter of the official PMDC Biology curriculum, and PMDC has confirmed the 2026 syllabus is unchanged from the 2025 revision, so everything on this page is still examinable.
How many Circulation questions come up in the MDCAT?
PMDC does not publish a per-chapter breakdown, so nobody can tell you a reliable number - be careful with pages that do. What can be counted is the paper as a whole: Biology is 81 of the 180 questions, and 4% of the Biology questions in our archive so far have come from Circulation.
Do these Circulation MCQs come with explanations?
Yes, and they are written from scratch rather than copied. An answer letter tells you nothing about why the other three options are wrong, which is the part that transfers to the next question. The first 0 questions of every paper are free to read in full; the rest need a pass.