ELECTROMAGNETIC FIELD THEORY QUIZ

both (a) and (b)

none of these

chemo-lithotrophs

chemo-organotrophs

Liebig's law of the minimum

Shelford's law of tolerance

quorum sensing

Heisenberg's principle of uncertainty

All of these

microbial alteration of pH, aw, Eh favours the growth of another

one organism removes an inhibitory substance for another

one organism produces a growth factor utilized by another

Each growth curve consists of four distinct phases

Plotted with logarithmic numbers

Shows development of microbial population under relatively stable environmental conditions

Graphs numbers of microbes versus time

decline phase

lag phase

log phase

stationary phase

C. botulinum

S. aureus

all of these

Salmonella

make their own food

produce a blue-green pigment

form a long chain glycocalyx

are highly susceptible to penicillin

prototrophs

organotrophs

chemotrophs

autotrophs

lesser than that produces three generations per hour

None of these

equal to that produces three generations per hour

greater than that produces three generations per hour

All of these

log(N/No) = nlog 2

N = No2n

log N/No = (0.3010) n