Differences between prokaryotesleukaryotes 1. The prokaryotic cell, in contrast to the eukaryotic cell, is not compartmentalized Nuclear membranes, mitochondria, endoplasmic reticulum, Golgi body, phagosomes and lysosomes are not present 2. Prokaryotes generally possess only a single circular chromosome, Since there is no nuclear membrane. the chromosome is bound to a specific site on the cell membrane the mesosome 3. Prokaryotic ribosomes are 70S (S stands for Svedberg unit, a measure of size), whereas eukaryotic ribosomes are larger (80S) Prokaryotic ribosomal subunits are 30S and 50S (eukaryotic are larger). The 30S ribosome has 16S RNA, whilst the 50S ribosome contains 23S and 5s RNA, Ribosomal rNa is larger in eukaryotes(e.g 18S versus 16S rRNA) 4. Bacterial membranes generally do not contain sterols( F)e.g cholesterol1. The prokaryotic cell, in contrast to the eukaryotic cell, is not compartmentalized. Nuclear membranes, mitochondria, endoplasmic reticulum, Golgi body, phagosomes and lysosomes are not present. 2. Prokaryotes generally possess only a single circular chromosome. Since there is no nuclear membrane, the chromosome is bound to a specific site on the cell membrane - the mesosome. 3. Prokaryotic ribosomes are 70S (S stands for Svedberg unit, a measure of size), whereas eukaryotic ribosomes are larger (80S). Prokaryotic ribosomal subunits are 30S and 50S (eukaryotic are larger). The 30S ribosome has 16S RNA, whilst the 50S ribosome contains 23S and 5S RNA. Ribosomal RNA is larger in eukaryotes (e.g. 18S versus 16S rRNA). 4. Bacterial membranes generally do not contain sterols (甾醇)(e.g. cholesterol). Differences between prokaryotes/eukaryotes