1Biologycalvin cycle
First stable compound during calvin cycle is
- A.3-phosphoglycerate
- B.Glyceraldehyde 3-phosphatse
- C.1,3 bisphosphoglyceratae
- D.Ribulose biphosphate
Answer and explanation locked
Bioenergetics MCQs for MDCAT
7 Bioenergetics questions from real MDCAT past papers (2020), each with the correct answer and a written explanation.
7 questionsBiology
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2Biologyribulose
What is the function of ribulose?
- A.Intermediate in photosynthesis
- B.Respirator fuel
- C.Intermediate in cellular respiration
- D.Component of DNA and RNA
Answer and explanation locked
3Biologypyruvate
Which of the following process does not need pyruvic acid as a substrate?
- A.Alcohol dermentation
- B.Calvin cycle
- C.Aerobic respiration
- D.Lactic acid dermentation
Answer and explanation locked
4Biologyelectron transport chain
Which of the following is a copper containing protein in electron transport chain?
- A.Plastoquinone
- B.Cytochrome-C
- C.Plastocyanin
- D.Ferrodoxin
Answer and explanation locked
5Biologyelectron transport chain
In electron transport chain, ATP synthesis takes place when electron moves from
- A.Primary electron acceptor (PEA) to plastoquinone
- B.Plastoquinone (Pq) to cytochromes
- C.Cytochromes to plastocyanin
- D.Plastocyanin (Pc) to photosystem 1 (PS-I)
Answer and explanation locked
6Biologyglycolysis
The end product of glycolysis in acrobic respiration is
- A.Ethanol and carbon dioxide
- B.Lactate
- C.Pyruvate
- D.Acetyl CoA
Answer and explanation locked
7Biologythylakoid
Photophosphorylation takes place in the ____ of the chloroplasts
- A.Stroma
- B.Granum
- C.Inner membrane
- D.Outer membrane
Answer and explanation locked
How Bioenergetics is examined
Bioenergetics 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 Bioenergetics”. What the archive can tell you is what actually appeared: 7 Bioenergetics 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 Bioenergetics MCQs are on this page?
7, 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 Bioenergetics in the MDCAT 2026 syllabus?
Yes. Bioenergetics 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 Bioenergetics 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 9% of the Biology questions in our archive so far have come from Bioenergetics.
Do these Bioenergetics 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.