The sulfur pearl of Namibia, Thiomargarita namibiensis is the worlds smallest bacterium Both (a) and (b) stores high concentrations of nitrate in a huge internal vacuole which takes up 98% of the organisms volume is the worlds largest bacterium TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following species in water reveal the presence of fecal pollution of human or animal origin? Fecal Streptococci E.coli Clostridium perfringens All of these TRUE ANSWER : ? YOUR ANSWER : ?
Members of all of the following genera of bacteria typically are found in a maturing Winogradsky column except Escherichia Clostridium Chlorobium Rhodospirillum TRUE ANSWER : ? YOUR ANSWER : ?
Removal of solids is generally considered as a None of these Secondary treatment Tertiary treatment Primary treatment TRUE ANSWER : ? YOUR ANSWER : ?
The amount of oxygen dissolved in hypolimnion water in the winter is __________ to/than the amount of oxygen dissolved in hypolimnion water in the summer approximately equal to lesser half greater TRUE ANSWER : ? YOUR ANSWER : ?
Loss of carbon through the microbial loop in oligotrophic environments is __________ to/than the loss of carbon through the microbial loop in copiotrophic environments. half greater lesser approximately equal TRUE ANSWER : ? YOUR ANSWER : ?
The rate of flux of oxygen in air is __________ to/than the rate of flux of oxygen in water. lesser approximately equal half greater TRUE ANSWER : ? YOUR ANSWER : ?
Because it can be used with a variety of media and allow a resuscitation step the __________ technique has become the common and often preferred method of evaluating the microbiological characteristics of water. most probable number membrane filtration Winogradsky MUG TRUE ANSWER : ? YOUR ANSWER : ?
The Redfield ratio is an index of concentration of carbon, phosphorous and sulfur nitrogen, potassium and iron carbon, nitrogen and phosphorous carbon, hydrogen and oxygen TRUE ANSWER : ? YOUR ANSWER : ?
Coliforms are used as indicator organisms because both (a) and (b) a testing procedure with great specificity is easy to perform they are present wherever enteric pathogens are present None of these TRUE ANSWER : ? YOUR ANSWER : ?