PMDC NRE — Biochemistry MCQs
Practice 107 Biochemistry past-paper MCQs for PMDC NRE, each with a detailed explanation and reference. Try free samples below, then start a full quiz.
Part of the full PMDC NRE QBank — 3,033 questions across all subjects.
Biochemistry is a core part of the PMDC NRE syllabus. HighYield's Biochemistry question bank collects 107MCQs modelled on real past papers, so you practise the exact style and difficulty you'll face on exam day. Every question comes with a worked explanation and a subject reference, so you learn why an answer is right — not just which option to pick.
Work through Biochemistry in Tutor mode to learn as you go, or switch to Timed mode to simulate real exam pressure. Your accuracy is tracked per subject, so you always know whether Biochemistry is a strength to maintain or a weak area to drill.
Sample Biochemistry Questions
A patient presents with abdominal pain, photosensitivity, and dark urine that turns darker on standing, along with elevated urinary porphobilinogen. What is the most likely diagnosis?
- A.Lead poisoning
- B.Wilson disease
- C.Acute intermittent porphyria
- D.Hemochromatosis
A patient with a diagnosis of gout is found to have overproduction of uric acid. Which enzyme, when deficient, causes a severe form of this condition associated with self-mutilation in children (Lesch-Nyhan syndrome)?
- A.Xanthine oxidase
- B.Purine nucleoside phosphorylase
- C.Hypoxanthine-guanine phosphoribosyltransferase (HGPRT)
- D.Adenosine deaminase
A patient with long-standing untreated phenylketonuria as a child now presents with severe intellectual disability. What is the biochemical basis of the neurological damage in this condition?
- A.Deficiency of tyrosine causing impaired myelin synthesis alone
- B.Deficiency of dopamine due to reduced tyrosine hydroxylase activity
- C.Excess accumulation of homogentisic acid in connective tissue
- D.Accumulation of phenylalanine and its metabolites, which are toxic to the developing brain
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