MBY 251 Lecture 1 Exam Study Guide.
Epulopiscium fisheloni - answer600 um long
Large for prokaryote
multiple copies of its genome
unique cell division>multiple offspring
related to clostridium
gut of tropical marine fish
Thiomargarita - answer750 micro m in diameter
Nanobacteria - answer...
Epulopiscium fisheloni - answer✔600 um long
Large for prokaryote
multiple copies of its genome
unique cell division>multiple offspring
related to clostridium
gut of tropical marine fish
Thiomargarita - answer✔750 micro m in diameter
Nanobacteria - answer✔50-500nm
lower limits of cell size - answer✔<0.15um unlikely
open oceans-small cells>0.2-0.4um
cell size does not influence rate of mutation (evolution)
*volume for essential components
*<0.1=insufficient
*0.15=marginal
mutations - answer✔= raw material of evolution
>the larger tho pool of mutations, the greater the evolutionary possibilities
>prokaryote=haploid>mutations expressed
immediately
=adapt rapidly>easily exploit new env.
Pathogenic bact. - answer✔very small
genomes=highly streamlined
missing genes
Membrane proteins - answer✔Outer surface: bind substrates or process large
molecules for transport
Inner surface:energy yielding reactions and
cellular functions
clustered to allow interaction or grouping of those with similar functions
Integral proteins - answer✔embedded in the membrane
Peripheral proteins - answer✔one portion anchored and other region pointed either into or out
of the cell
*lipoproteins-lipid tail that anchors into membrane
Associated proteins - answer✔Not embedded but are firmly associated with membrane surfaces
Archaeal membranes - answer✔Ether bonds between glycerol and hydrophobic side chains
*lipids lack fatty acids
*lipids=multiple 5C hydrocarbon isoprene
*cytoplasic membrane=glycerol diethers/
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