prokaryotes Flashcards
prokaryote definition
- no nucleus
- no membrane bound organelles
- unicellular
- classed into bacteria and archaea
are eukaryotes of prokaryotes smaller
prokaryotes
prokaryotic cytoskeleton
- less developed, no centrioles
what’s the cell wall made out of
peptidoglycan cell wall
ribosomes size in prokaryotes vs eukaryotes
prokrayotic ribsomomes are 70s
eukaryotic ribosmoes are 80s
what features may eukaryotes contain
- contain plasmids, protective waxy capsule.
- pili
energy production
- in bateria few ATP produced via anerobic respiration
- bacteria can produce ATP in a similar way to mitchondria by creating a protien gradient across the cell membrame
- some bacteria can use light to generate a protien gradeint, and therfore ATP
what is ATP
Adenosine triphosphate
a measure of energy
what is the endosymbiont theory
- there are 2 indepenednt bacteria, living as uniceullar organsims.
- The larger eukaryote englufs the samller eukaryote
- The smaller prokaryote evolves a way to avoid being digested by the larger prokaryote
- this is a mutalistic and symbiotic relationship
- some small prokaryotes carry out photosynthesis and pay their host with glucose. These evolve into chloroplasts
- some small prokaryotes carry out aerobic repsiration and convert glucose into energy. These eveolve into mitochondria
ribosomes subunits in prokaryotes vs eukaryotes
in 70s- smallee subunits
in 80s - larger subunits
average moleclar weight of protiens
70s- less complex protiens
80s - larger more complex protiens
what does mutaslistic mean
association between organisms of two different species in which each benefits
what does symbiotic mean
A close, prolonged association between two or more different biological species. Can also be mutalistic
