bacterial structure & growths

Question 1

Similarities between bacteria and eukaryotes

Answer 1

biochem units
amino acids
nucleotides
fatty acids
vitamins
energy metabolism
biosynthesis

Question 2

Difference between bacteria and eukaryotes

Answer 2

Cell wall
70S ribosome
No ER/mitochondria
No mitotic spindles

Question 3

Porins are on ___

Answer 3

Gram negative

Question 4

Periplasmic space are in ___

Answer 4

Gram negative

Question 5

Outer membrane are on ____

Answer 5

Gram negative

Question 6

Pili on ___

Answer 6

both

Question 7

lipopolysaccharides (LPS) are on ___

Answer 7

Gram negative

Question 8

Teichoic acids are on ___

Answer 8

Gram positive

Question 9

Lipoteichoic acids are on ___ function to ____

Answer 9

Gram positive, anchor cell wall to membrane

Question 10

Cytoskeleton for bacterial (3) (what, similar eukaryotic, function)

Answer 10

Ftz - tubulin - division
MreB - actin - shape/polarity/chrom separation
CreS - intermediate filaments - shape

Question 11

LPS located on?

Answer 11

gram neg, outter leaflet of outer membrane

Question 12

LPS parts

Answer 12

Lipid A - endotoxins
Core polysaccharides
O side oligosacchardies (somatic antigens = O antigens)

Question 13

Energy sources (2)

Answer 13

ATP

Electron transport system (proton motive force)

Question 14

Significance of nucleoid (vs nucleus)

Answer 14

Transcrption and translation happens simultaneously

Question 15

Bacterial growth curve: Lag phase

Answer 15

Inoculum - adjustment to new evironment - proper intracellular environment to optimal grow

Question 16

Bacterial growth curve: Exponential phase

Answer 16

Rate proportional to amount of bacteria

Doubling/generation time

Question 17

Bacterial growth curve: Stationary phase

Answer 17

Grow = death; nutrition vs toxin

Question 18

Bacterial growth curve: Death phase

Answer 18

decline - spontaneous cell lysis/autolysis

Question 19

Aerobes characteristics

Answer 19

need O2, cannot ferment

Question 20

Anaerobes characteristics

Answer 20

Kill by O2, only ferments

Question 21

Indifferent

Answer 21

aerobic tolerant - will ferment

Question 22

Facultative

Answer 22

respire with O2, ferment with O2

Question 23

Microerophilic

Answer 23

best with low O2

Question 24

Fermentation vs respiration

Answer 24

Ferm: organic compound - e- donnor & acceptor - no net oxidation
Resp: electron transport system
- Use O2 or amino acids/nitrate/nitrite as final e acceptors

Question 25

sporulation

Answer 25

turns to spores - dehydrated, resistant, no metabolic activity

Question 26

Germination

Answer 26

spore –> vegatative state when conditions improves

Question 27

Antimicrobials targets:

Answer 27

cell wall
outer/cytoplasmic membrane
ribosomes
nucleic acid syn
metabolic inhib