DOCKS AND HARBOR ENGINEERING QUIZ

Cells low in lipid content are harder to kill than other cells

Cocci are usually more resistant than rods

Higher the optimal and maximal temperatures for growth, higher the resistance

Bacteria that clump considerably or form capsules are difficult to kill

catalase activity

protease activity

none of these

coagulase activity

an extrinsic factor

an intrinsic factor determining the likelihood of microbial proliferation

a processing factor

All of these

eosine Methylene blue agar

MacConkey broth

all of these

violet Red Bile agar

Acetic acid

Citric acid

Maleic acid

Tartaric acid

Oxidation-Reduction Potential

Moisture

All of these

pH

antagonist at optimal concentrations

synergistically if added in excess of optimum level

None of these

Both (a) and (b)

incubation of a food suspension in an enrichment medium followed by inoculation on to a non-selective medium.

incubation of a food suspension in an enrichment medium

incubation of a food suspension in an enrichment medium followed by inoculation on to a suitable selective medium.

None of these

warm temperatures and increased amounts of pressure

cold temperatures and increased amounts of salt

cold temperatures and the absence of oxygen

warm temperatures and increased amounts of acid

any of the pH

neutral pH

alkaline pH

acidic pH