Leaving Cert Biology: Diversity of Organisms & Microbiology questions

Classification and the biology of micro-organisms (bacteria, fungi, protista, viruses), plus microbiology technique and biotechnology.

58 past Biology questions on this topic, spanning 2015 to 2025, grouped by year. Every question opens on the exact page of the official paper, with its marking scheme beside it.

Diversity of Organisms & Microbiology question pack

Every past question on this topic, taken from the official exam papers and set out for printing. Free, no sign-up.

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2025 · 4 questions

Paper 1 · Q420 marks

cell membrane, cell ultrastructure, plant cells

Paper 1 · Q1030 marks

laboratory activity

Paper 1 · Q1660 marks

gas exchange, cell cycle, lymphatic system

2024 · 3 questions

Q720 marks

genetic engineering

Q1760 marks

enzymes, excretion, cell division

2023 · 4 questions

Q520 marks

population growth

Q930 marks

respiration, anaerobic respiration

Q1030 marks

practical activities, microscopy

Q1660 marks

osmosis, genetic engineering

2022 · 2 questions

2021 · 2 questions

Q1760 marks

nervous system, osmosis

Show 6 earlier years (2015 to 2020)

2020 · 1 question

Q1460 marks

menstrual cycle, plant reproduction

2019 · 2 questions

Q830 marks

anaerobic respiration, experiments

Q1560 marks

digestive system, plant reproduction

2018 · 4 questions

Q420 marks

genetic engineering, plasmids, cloning vectors

Q730 marks

scientific method, microscopy, food tests

Q1560 marks

immunity, eye

2017 · 3 questions

Q420 marks

nutrition

Q520 marks

respiration, glycolysis, atp

Q1460 marks

immunity, vaccination, adaptations

2016 · 2 questions

Q320 marks

asexual reproduction

Q1560 marks

circulatory system, menstrual cycle, bones

2015 · 5 questions

Q520 marks

osmosis, turgor, experiments

Q1260 marks

photosynthesis, respiration, genetic modification

Diversity of Organisms & Microbiology question pack

Every past question on this topic, taken from the official exam papers and set out for printing. Free, no sign-up.

Try a random question now →

0 of 0 doneSaved on this device.

2025 · 1 question

Q1660 marks

enzymes, genetics

2024 · 3 questions

Q220 marks

cell biology, reproduction

2023 · 2 questions

Q1760 marks

skeletal system, endocrine system

2022 · 4 questions

Q930 marks

laboratory skills

Q1360 marks

respiratory system, breathing

Q1660 marks

reproduction, musculoskeletal system

2021 · 1 question

Q520 marks

immune system

Show 6 earlier years (2015 to 2020)

2020 · 3 questions

Q220 marks

true or false

Q520 marks

cell types, cell biology

Q1460 marks

anaerobic respiration, plant cell

2019 · 2 questions

Q1460 marks

endocrine system, vegetative propagation

Q1560 marks

nervous system, kidney, excretion

2018 · 2 questions

Q320 marks

enzymes, immobilised enzymes

Q1360 marks

photosynthesis, respiration

2017 · 4 questions

Q320 marks

genetic engineering, dna

Q830 marks

respiration, experimentation

2016 · 2 questions

Q1260 marks

defence against disease, endocrine system

Q1560 marks

vegetative propagation, seeds, nervous system

2015 · 2 questions

Q730 marks

experimentation

Q1560 marks

seed dispersal, skin

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Questions come from the official State Examinations Commission papers. Every link opens the original PDF on examinations.ie. The topic packs reproduce the same questions unchanged, with the year, paper and question number printed on each one.