Related Questions

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
Endotoxin producing bacteria
A Salmonella typhi
B Fusobacterium spp
C Staphylococcus saprophyticus
D Bacillus anthracis
E Clostridium perfringens
Bacteria producing neonatal meningitis are
A Escherichia coli
B Streptococcus agalactiae
C Listeria monocytogenes
D Mycobacterium tuberculosis
E Neisseria meningitides
The population of a bacteria culture doubles every 2 minutes. Approximately how many minutes with it take for the population to grow from 1,000 to 500,000 bacteria?
A 10
B 12
C 14
D 18
The population of bacteria in an experiment was only two in first day. If each day the population increases by 3, what will be the number of bacteria in 100 day?
A 199
B 299
C 302
D 399

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