GATE Environmental Microbiology: Cell Chemistry and Cell Biology – Previous Year Questions

5 GATE previous year questions on Cell Chemistry and Cell Biology (Environmental Microbiology, Environmental Science and Engineering) with answers and explanations, from every paper.

1. GATE 2021 ES Q28 (1 mark, Multiple choice) – Which nucleotide pairing is present in double-helical DNA?
2. GATE 2022 ES Q44 (2 marks, Multiple select) – A plasmid-free bacterial cell has one chromosome and dry-mass composition55% protein,3% DNA,21% RNA. At least2500 protein types are expressed. Which…
3. GATE 2023 ES Q15 (1 mark, Multiple choice) – Consider I Eukaryotic photosynthesis occurs in chloroplasts, and energy-yielding breakdown in cytoplasm/mitochondria. II The same organelles occur in…
4. GATE 2024 ES Q45 (2 marks, Multiple select) – Which DNA statements are correct?
5. GATE 2026 ES Q38 (2 marks, Multiple choice) – Which sequence correctly describes breakdown of DNA into lower-molecular-weight compounds?