Members of all of the following genera of bacteria typically are found in a maturing Winogradsky column except Clostridium Escherichia Chlorobium Rhodospirillum TRUE ANSWER : ? YOUR ANSWER : ?
Metabolism of dissolved organic material released by phytoplankton allows heterotrophic bacteria to become part of the particulate organic matter that is passed up the food web to be metabolized and released as mineral elements and CO2 at each transfer. This sentence describes the Winogradsky column microbial loop Redfield ratio Gibbs free energy TRUE ANSWER : ? YOUR ANSWER : ?
Activated sludge undergoes any of these Primary treatment Secondary treatment Tertiary treatment TRUE ANSWER : ? YOUR ANSWER : ?
The sulfur pearl of Namibia, Thiomargarita namibiensis is the worlds smallest bacterium stores high concentrations of nitrate in a huge internal vacuole which takes up 98% of the organisms volume Both (a) and (b) is the worlds largest bacterium TRUE ANSWER : ? YOUR ANSWER : ?
Coliforms are used as indicator organisms because None of these a testing procedure with great specificity is easy to perform they are present wherever enteric pathogens are present both (a) and (b) TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following species in water reveal the presence of fecal pollution of human or animal origin? Fecal Streptococci Clostridium perfringens All of these E.coli 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 greater half 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. approximately equal greater half lesser TRUE ANSWER : ? YOUR ANSWER : ?
Chemical precipitation of phosphorus is secondary treatment primary treatment tertiary treatment both (a) and (b) TRUE ANSWER : ? YOUR ANSWER : ?
Removal of solids is generally considered as a Secondary treatment None of these Tertiary treatment Primary treatment TRUE ANSWER : ? YOUR ANSWER : ?