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Characteristics of endotoxin are
A Lipopolysaccharide in nature
B Stable at 100°C for 1 hour
C Highly antigenic
D Used as vaccine in toxoid form
E Secreted from cell
Endotoxin is
A Firmly bound to the cell surface (Celt to
B Released after death of the bacteria
C Composed of glycoprotein
D Heat labile
E Responsible for causing fever and hypoglycemia
Following are the characteristics of endotoxin
A Causes non-specific enhancement of immune response
B Causes leukocytosis
C Causes induction of growth factor production
D Highly antigenic in nature
E Decrease plasma cortisol
The number of bacteria in a colony was growing exponentially . At 1 pm yesterday the number of bacteria was 1000 and at 3 pm yesterday it was 4000. How many bacteria were there in the colony at 6 pm yesterday ?
A 32,000
B 80,000
C 60,072
D 7,683
A certain population of bacteria doubles every 10 minutes. If the number of bacteria in the population initially was 104, what was the number of bacteria in the population 1 hour later?
A 2(104)
B 6(104)
C (26) (104)
D (106)(104)
It takes 30 days to fill a laboratory dish with bacteria, If the size of the bacteria doubles each days, how long will it take for the bacteria to fill one-----half of the dish?
A 10 days
B 15 days
C 24 days
D 29 days
The cost of producing rice in country Q is 10 percent less than the cost of producing rice in country Y. Even after transportation fees and tariff charges are added. it is still cheaper for a company to import rice form country Q to country Y than to produce rice in country Y? The statements above , if true , best support which of the following assertions?
A Labor costs in country Q are 10 percent below those in country Y .
B Importing rice from country Q to country Y is less than 10 percent of the cost of manufacturing rice in country Q .
C The fee for transporting rice from country Q to country Y is more than 10 percent of the cost of manufacturing rice in country Q .
D It takes 10 percent less time to manufacture rice in country Q than it does in country Y.
The cost of producing Garment in Country Q is ten percent less than the cost of producing Garment in Country Y, Even after transportation fees and tariff charges are added,it is still cheaper for a company to import Garment from Country Q to Country Y than to produce Garment in Country Y". The statement above, if true, best support which of the following assertions?
A Importing Garment from Country Q to Country Y will eliminate ten percent of new manufacturing jobs in Country Y.
B The tariff on a Garment imported from Country Q to Country Y is less than ten percent of the cost of manufacturing the Garment in Country Y.
C The fee for transporting Garment from Country Q to Country Y is more than ten percent of the cost of manufacturing the Garment in Country Q.
D It takes ten percent less time to manufacture a Garment at Country Q than it dos in Country Y.
Some bacteria are extremely harmful, but ____________ are regularly used in producing cheese and many other foods.
A another
B the others
C another's
D others
Pigment producing bacteria are
A Pseudomonas aeruginosa
B Corynebacterium diphtheriae
C Staphylococcus aureus
D Streptococcus pyogenes
E Escherechia coli

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