Chapter 3, cell interior Flashcards
I fucked up some of this is exterior
flagella
Embedded in cell wall/ membrane of BACTERIA, propeller movement, run (move) and tumble (turn, abrupt change)
gram - flagella
4 ring due to outter membrane
gram + bacteria flagella
2 rings due to no outter membrane
taxis
move toward or away from something
axial filaments/ endoflagella
spirochetes (gram -), spiral like, anchored at one end, rotation
pili/ fimbriae
mostly gram-, hairlike, shorter striaght and thinner than flagella, for attachment, DNA transfer, motility, antigen
cytoplasm
ANYTHING on the inside of the plasma, 80% water
nucleoid
location of genome/DNA, tightly packed DNA (less than viruses and euk), usually has one chromosome
coupled Transcription and translation (pro)
a messenger RNA can be translated as it is being transcribed
Prokaryotic cell chromosome (bacteria/archaea)
single (mostly) and circular
packing tightness based on
ionic strength (cations like mg+ present), DNA folding proteins, supercoiling
DNA gyrase
negative supercoil
topoisomerase I
negative supercoil
Transcription/translation occurs at
nucleoid/cytoplasm interface (edge), DNA will wiggle to become more available for transcription
cytosol
liquid portion of cytoplasm, where the organelles are suspended