Chapter 3, cell interior Flashcards

I fucked up some of this is exterior

1
Q

flagella

A

Embedded in cell wall/ membrane of BACTERIA, propeller movement, run (move) and tumble (turn, abrupt change)

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2
Q

gram - flagella

A

4 ring due to outter membrane

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3
Q

gram + bacteria flagella

A

2 rings due to no outter membrane

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4
Q

taxis

A

move toward or away from something

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5
Q

axial filaments/ endoflagella

A

spirochetes (gram -), spiral like, anchored at one end, rotation

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6
Q

pili/ fimbriae

A

mostly gram-, hairlike, shorter striaght and thinner than flagella, for attachment, DNA transfer, motility, antigen

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7
Q

cytoplasm

A

ANYTHING on the inside of the plasma, 80% water

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8
Q

nucleoid

A

location of genome/DNA, tightly packed DNA (less than viruses and euk), usually has one chromosome

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9
Q

coupled Transcription and translation (pro)

A

a messenger RNA can be translated as it is being transcribed

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10
Q

Prokaryotic cell chromosome (bacteria/archaea)

A

single (mostly) and circular

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11
Q

packing tightness based on

A

ionic strength (cations like mg+ present), DNA folding proteins, supercoiling

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12
Q

DNA gyrase

A

negative supercoil

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13
Q

topoisomerase I

A

negative supercoil

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14
Q

Transcription/translation occurs at

A

nucleoid/cytoplasm interface (edge), DNA will wiggle to become more available for transcription

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15
Q

cytosol

A

liquid portion of cytoplasm, where the organelles are suspended

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16
Q

macromolecules in cytosol portion

A

30% w/v
contains enzymes, regulatory proteins, building blocks

17
Q

ribosomes found in

A

cytosol

18
Q

ribosomes made of

A

protein and rRNA

19
Q

prokaryotic ribosome size

A

70s (50s + 30s)

20
Q

crowding in the cytosol

A

allows for quick protein folding, keeps DNA in nucleoid, allow for plasmid packaging, steric repulsion (allows small atoms to move though)

21
Q

structures in polyribosomes

A

polyribosomes, plasmid

22
Q

cytoskeleton (prokaryotic)

A

structural filaments, can provide shape

23
Q

ftsZ

A

cytoskeleton protein, spherical loops, in S. aureus

24
Q

MreB

A

Cytoskeleton protein, rod shaped loops, in e coli and b. subtillis

25
Q

crescentin

A

cytoskeleton protein, line, vibroid, hotdog looking kinda

26
Q

gas vesicles

A

in aquatic photosynthetic bacteria, buoyancy, protein shell, prevents water from entering
ex. cyanobacteria

27
Q

Thylakoids

A

plasma membrane folding, contains pigments, proteins, cofactors for capturing light, photosynthesis

28
Q

carboxysomes

A

co2 fixing, protein shell, contains RuBisCo (photosynthesis enzyme)
In: cyanobacteria

29
Q

storage granules/ inclusion bodies

A

stores s, p, ca, organic polymers, glycogen, PHA

30
Q

magnetotactic bacteria

A

motile, aquatic, iron crystals in cytoplasmic membrane, iron helps bacteria orient it

can be used for cancer treatments, shooting DNA in cells, yuh

31
Q

polyribosome

A

a cluster of ribosomes linked together by messenger RNA and forming the site of protein synthesis

32
Q

structures found in the cytoskeleton

A

inclusion bodies, gas vesicles, thylakoids, Carboxysomes, Magnetosomes

33
Q

Plasmid

A

a small circular DNA molecule found in bacteria and other microbes, not necessary for life.

34
Q

granule cytosol appearance is due to

A

ribosomes

35
Q

ribosome function

A

protein synthesis, reads the mRNA for translation

36
Q

monotrichous

A

one flagella

37
Q

lophotrichous

A

many flagella in one spot

38
Q

amphitrichous

A

flagella at both ends

39
Q

peritrichous

A

flagella all over