Minerals and Antioxidant Systems
- Previous year questions on Minerals and Antioxidant Systems for NEET PG (National Eligibility cum Entrance Test - Postgraduate), from the Biochemistry section of the exam.
- Most questions here come from previous-year papers of Indian postgraduate medical entrance and licensing exams; where a paper and year are recorded the question carries them. The image-based questions are original vignettes written around an openly licensed figure, and were never asked in any exam.
- 35 live questions in Minerals and Antioxidant Systems.
- 8 of 35 questions carry a verified exam year: 2017, 2018, 2019.
- Biochemistry is worth about 16 of 300 questions on the exam. See every subject’s weightage.
- Question set last updated 6 Sept 2026.
Q1.Keshan's cardiomyopathy due to deficiency of:
- AChromium
- BSelenium✓ Correct answer
- CMagnesium
- DCopper
Q2.In the human body, which of the following trace elements is next to iron:
- ACa2+
- BZn2+✓ Correct answer
- CCu2+
- DSelenium
Q3.Selenium is a cofactor for the following enzyme?
- AGlutathione peroxidase✓ Correct answer
- BCytochrome oxidase
- CCytochrome reductase
- DXanthine oxidase
Q4.Which of the following enzymes does NOT contain Cu2+?
- ACeruloplasmin
- BCytochrome Oxidase
- CXanthine oxidase✓ Correct answer
- DSuperoxide Dismutase
Q5.Zinc is cofactor of which enzyme?
- ACarbonic anhydrase✓ Correct answer
- BLysyl oxidase
- CCarboxylase
- DKinase
Q6.Which of the following is the important reactive group of glutathione in its role as an antioxidant?
- ASerine
- BSulphydryl✓ Correct answer
- CTyrosine
- DAcetyl-CoA
Q7.Which of the following enzyme is free radical scavenger?
- AGlutathione peroxidase✓ Correct answer
- BNADH oxidase
- CHydrogen peroxidase
- DHypochlorous
Q8.Menkes syndrome is a disorder of
- ACopper transport✓ Correct answer
- BIron Transport
- CSodium transport
- DPotassium Transport
Q9.Selenium is a cofactor in following enzyme
- AGlutathione peroxidase✓ Correct answer
- BCytochrome oxidase
- CCytochrome reductase
- DXanthine oxidase
Q10.Which of the following has antioxidant property?
- ASelenium
- BCopper
- CZinc
- DAll✓ Correct answer
Answer key
Q1: B. Selenium; Q2: B. Zn2+; Q3: A. Glutathione peroxidase; Q4: C. Xanthine oxidase; Q5: A. Carbonic anhydrase; Q6: B. Sulphydryl; Q7: A. Glutathione peroxidase; Q8: A. Copper transport; Q9: A. Glutathione peroxidase; Q10: D. All.
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- Bioenergetics and the ETC
- Krebs Cycle
- Amino Acids: Structure and Classification
- Amino Acid Metabolism and Nitrogen Handling
- Inborn Errors of Amino Acid Metabolism
- Levels of Protein Structure and Function
- Urea Cycle and Hyperammonaemia
- Lipids: Classification and Chemistry
- Beta-Oxidation and Ketone Body Formation
- Fatty Acid Synthesis and Eicosanoids
- Acylglycerol and Sphingolipid Metabolism
- Cholesterol Metabolism and Lipoprotein Transport
- Haem Synthesis, Porphyrias and Bile Pigments
- Enzymes: Mechanism of Action and Clinical Uses
- Enzyme Kinetics, Inhibition and Regulation
- Fat-Soluble Vitamins: A, D, E and K
- B-Complex Vitamins in Energy Metabolism
- Folate, Vitamin B12 and Other Vitamins
- Nucleotide Metabolism and Its Disorders
- DNA Packaging, Replication and Repair
- Transcription and RNA Processing
- Translation and Post-Translational Modification
- Control of Gene Expression
- Recombinant DNA and Genomic Techniques