Eukaryotes vs Prokaryotes Flashcards
DNA contained in a nucleus surrounded by a nuclear envelope of two membranes
Eukaryotes
No true nucleus. DNA lies free in cytoplasm
Prokaryotes
Linear DNA associated with histone proteins to form chromosomes
Eukaryotes
Circular DNA not associated with proteins. Separate loops of DNA called plasmids may be present
Prokaryote
Cell wall, if present, made from cellulose (plants, algae) or chitin (fungi)
Eukaryotes
Cell wall containing peptidoglycan
Prokaryotes
Endoplasmic reticulum present and may contain attached ribosomes
Eukaryotes
No endoplasmic reticulum or associated organelles (e.g golgi apparatus)
Prokaryotes
Contains double membrane bound organelles, mitochondria and chloroplasts (in plants, algae)
Eukaryotes
No double membrane bound organelles
Prokaryotes
Many types of cell organelle present (compartmentalisation and division of labour)
Eukaryotes
Few types of organelle present
Prokaryotes
Larger (80S) ribosomes (22nm in diameter)
Eukaryotes
Smaller (70S) ribosomes (18nm in diameter)
Prokaryotes
If present, undulipodia have 9 + 2 arrangement of microtubules and are surrounded by plasma membrane
Eukaryotes
If present, flagella contain a single filament of the protein flagellin
Prokaryotes
Cells are large, usually 10-100 micrometers in diameter
Eukaryotes
Cells are small usually 0.5-5 micrometers in diameter.
Prokaryotes
Binary fission for cell division
Prokaryotic
Mitosis for cell division
Eukaryotic
Splicing occurs
Eukaryotic
mRNA travels out of nuclear pore
Eukaryotic
One mRNA for one gene
Eukaryotic
Transcription and translation co-occur
Prokaryotic
How many times smaller are prokaryotes and eukaryotes?
Typically 1000-10,000x smaller in volume.
Glycocalyx found in cells that have no cell wall.
Eukaryotes
Glycocalyx as a capsule or slime layer.
Prokaryotes
Sterols and carbohydrates act as receptors in the plasma membrane.
Eukaryotic
No carbohydrates or sterols in plasma membrane.
Prokaryotes
Cytoskeleton and cytoplasmic streaming in the cytoplasm.
Eukaryotes
No cytoskeleton or cytoplasmic streaming in the cytoplasm.
Prokaryotes
Sexual recombination during meiosis.
Eukaryotes
No sexual recombination.
Prokaryotes