Leaving Cert Biology 2021

The 2021 Leaving Cert Biology exam paper and official marking scheme, free below as direct PDF links from the State Examinations Commission archive.

Higher Level

Exam PaperMarking Scheme
What's in the 2021 Higher Level paper?
  • Q1 biochemistry, lipids, vitamins · 20 marks
  • Q2 nitrogen cycle, ecology, decomposers · 20 marks
  • Q3 cell division, mitosis, chromosomes · 20 marks
  • Q4 enzymes, metabolism, cell biology · 20 marks
  • Q5 human reproduction, embryo development, hormones · 20 marks
  • Q6 general biology, true or false · 20 marks
  • Q7 musculoskeletal system, bones, anatomy · 20 marks
  • Q8 experimentation, food tests, dna isolation · 30 marks
  • Q9 enzymes, denaturation, laboratory investigation · 30 marks
  • Q10 microbiology, leaf yeast, aseptic technique · 30 marks
  • Q11 ecology, food chains, conservation · 60 marks
  • Q12 genetics, mutations, genetic engineering · 60 marks
  • Q13 respiration, photosynthesis, metabolism · 60 marks
  • Q14 digestion, plant transport, vascular tissue · 60 marks
  • Q15 plant biology, reproduction, germination · 60 marks
  • Q16 human biology, skin, immune system · 60 marks
  • Q17 diversity of organisms, nervous system, osmosis · 60 marks

Ordinary Level

Exam PaperMarking Scheme
What's in the 2021 Ordinary Level paper?
  • Q1 nutrition, biomolecules, proteins, vitamins · 20 marks
  • Q2 tissues, organs, tissue culture · 20 marks
  • Q3 anatomy, organ systems · 20 marks
  • Q4 genetics, monohybrid cross · 20 marks
  • Q5 virology, microbiology, immune system · 20 marks
  • Q6 ecology, fieldwork techniques · 20 marks
  • Q7 musculoskeletal system, joints, bone disorders · 20 marks
  • Q8 microscopy, plant cells · 30 marks
  • Q9 enzymes, metabolism, ph · 30 marks
  • Q10 digestion, enzymes, seed germination · 30 marks
  • Q11 ecology, pollution, food chains · 60 marks
  • Q12 genetics, dna, cell division · 60 marks
  • Q13 circulatory system, heart, lymphatic system · 60 marks
  • Q14 digestion, endocrine system, hormones · 60 marks
  • Q15 plant biology, transport in plants, homeostasis · 60 marks
  • Q16 human biology, respiration, reproduction · 60 marks
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All PDFs open on the State Examinations Commission archive (examinations.ie). ExamAI links to them; we don't host or alter them.