Biology - Differences between Prokaryotes and Eukaryotes

This is a table to show differences between Prokaryote cells and Eukaryote cells, it was a homework task. It is based on the OCR specification for AS Biology. Happy revising! =P

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  • Created by: Re-Re
  • Created on: 12-01-13 23:03
Preview of Biology - Differences between Prokaryotes and Eukaryotes

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Reianna Shakil L6EF Biology 12/09/12
Feature Prokaryote Eukaryote
Cell size Average diameter 0.5-5µm. Up to 4µm diameter common;
commonly 1000-10,000 times
volume of prokaryotic cells.
Form Unicellular or filamentous. Unicellular, filamentous or truly
Genetic material Circular DNA lying naked in the Linear DNA associated with
cytoplasm. protein and RNA to form
No true nucleus or chromosomes within a nucleus.
chromosomes. No nucleolus. Nucleolus in nucleus.
Protein synthesis 70S ribosomes (smaller). No 80S ribosomes (larger).
endoplasmic reticulum Ribosomes may be attached to
involved. (Many other details endoplasmic reticulum.
of protein synthesis differ,
including susceptibility to
antibiotics, e.g. prokaryotes
inhibited by streptomycin.)
Organelles Few organelles. Many organelles.
None are surrounded by an Envelope-bound organelles
envelope (2 membranes). present, e.g. nucleus,
Internal membranes scarce; if mitochondria, chloroplasts.
present usually associated Great diversity of organelles
with respiration or bounded by single membranes,
photosynthesis. e.g. Golgi apparatus, lysosomes,
vacuoles, microbodies,
endoplasmic reticulum.
Cell walls Rigid and contains Cell walls of green plants and
polysaccharides with amino fungi rigid and contain
acids. polysaccharides.
Murein is main strengthening Cellulose is main strengthening
compound. compound of plant walls, chitin
of fungal walls.
Flagella Simple, lacking microtubules. Complex, with `9+2'
Extracellular (not enclosed by arrangement of microtubules.
cell surface membrane). Intracellular (surrounded by cell
20nm diameter. surface membrane).
200nm diameter.
Respiration Mesosomes in bacteria, Mitochondria for aerobic
except cytoplasmic respirations.

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Reianna Shakil L6EF Biology 12/09/12
membranes in blue-green
Photosynthesis No chloroplasts. Takes place Chloroplasts containing
on membranes which show membranes which are usually
no stacking. stacked into lamellae or grana.
Nitrogen fixation Some have the ability. None have the ability.…read more



Very helpful! :)

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