CIE AS Biology (9700) exams from 2022

Revision Notes

1.2.4 Prokaryotic v Eukaryotic Cells

Structural Features of Typical Prokaryotic Cells

  • Animal and plant cells are types of eukaryotic cells, whereas bacteria are a type of prokaryote
  • Prokaryotes have a cellular structure distinct from eukaryotes:
    • Their genetic material is not packaged within a membrane-bound nucleus and is usually circular (eukaryotic genetic material is packaged as linear chromosomes)
    • Prokaryotes lack membrane-bound organelles
    • They are many (100s/1000s) of times smaller than eukaryotic cells
    • Their ribosomes are structurally smaller (70 S) in comparison to those found in eukaryotic cells (80 S)

Cell Components- Prokaryotic cell, downloadable AS & A Level Biology revision notes

Prokaryotic cells are often described as being ‘simpler’ than eukaryotic cells, and they are believed to have emerged as the first living organisms on Earth

Prokaryotic v Eukaryotic Cell Structures

Prokaryotic & eukaryotic cells comparison tableComparison of Prokaryotes and Eukaryotes table, downloadable AS & A Level Biology revision notes

Author: Jenna

Jenna studied at Cardiff University before training to become a science teacher at the University of Bath specialising in Biology (although she loves teaching all three sciences at GCSE level!). Teaching is her passion, and with 10 years experience teaching across a wide range of specifications – from GCSE and A Level Biology in the UK to IGCSE and IB Biology internationally – she knows what is required to pass those Biology exams.
Close

Join Save My Exams

Download all our Revision Notes as PDFs

Try a Free Sample of our revision notes as a printable PDF.

Join Now