类别 全部 - replication - shapes - prokaryotic

作者:Eman alaa 6 年以前

209

prokaryotes

Prokaryotic cells, typically represented by bacterial cells, exhibit a range of sizes from 2-8 micrometers in length and 0.2-2 micrometers in diameter. They are primarily monomorphic but can have diverse shapes such as spiral, cocci, and bacilli, with some displaying less common forms like star-shaped or rectangular.

prokaryotes

Prokaryotic cell

bacterial cell

arrangement
chains

streptococci

pairs

tetrads

diplococci

clusters

sarcinae

staphylococci

size
2-8 micrometer in length
0.2-2 micrometer in diameter
shape
other shapes

rectangular shape

Star-shape

main shapes

spiral

spirochete

spirilla

vibrios

bacilli

cocci

pleomorphic
monomorphic

external structure

Fimbriae and Pili
Axial Filaments
flagella
polar

amphitrichous

lophotrichous

monotrichous

peritrichous
glycocalyx
slime layer
capsule

Differ from Eukaryotic cell

replication
binary fission
transcription and translation
no histone protien
no organelles
no nuclear membrane
circular chromosomal DNA