__________ is an environment like __________ where microorganisms are functioning in an extremely thin film of water and where oxygen-containing air is close to them. low oxygen diffusion environment; soils low oxygen diffusion environment; lakes high oxygen diffusion environment; lakes high oxygen diffusion environment; soils 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. membrane filtration Winogradsky MUG most probable number 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 : ?
Loss of carbon through the microbial loop in oligotrophic environments is __________ to/than the loss of carbon through the microbial loop in copiotrophic environments. lesser half greater approximately equal TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following species in water reveal the presence of fecal pollution of human or animal origin? Fecal Streptococci All of these E.coli Clostridium perfringens TRUE ANSWER : ? YOUR ANSWER : ?
Chemical precipitation of phosphorus is both (a) and (b) tertiary treatment primary treatment secondary treatment TRUE ANSWER : ? YOUR ANSWER : ?
Members of all of the following genera of bacteria typically are found in a maturing Winogradsky column except Clostridium Rhodospirillum Chlorobium Escherichia TRUE ANSWER : ? YOUR ANSWER : ?
The sulfur pearl of Namibia, Thiomargarita namibiensis is the worlds smallest bacterium is the worlds largest bacterium Both (a) and (b) stores high concentrations of nitrate in a huge internal vacuole which takes up 98% of the organisms volume TRUE ANSWER : ? YOUR ANSWER : ?
Trickling filter comes under secondary treatment primary treatment none of these tertiary 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 lesser half approximately equal to greater TRUE ANSWER : ? YOUR ANSWER : ?