__________ is an environment like __________ where microorganisms are functioning in an extremely thin film of water and where oxygen-containing air is close to them. high oxygen diffusion environment; soils high oxygen diffusion environment; lakes low oxygen diffusion environment; soils low oxygen diffusion environment; lakes 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 half greater approximately equal to lesser TRUE ANSWER : ? YOUR ANSWER : ?
Trickling filter comes under primary treatment tertiary treatment secondary treatment none of these TRUE ANSWER : ? YOUR ANSWER : ?
The Redfield ratio is an index of concentration of carbon, phosphorous and sulfur carbon, nitrogen and phosphorous carbon, hydrogen and oxygen nitrogen, potassium and iron TRUE ANSWER : ? YOUR ANSWER : ?
Chemical precipitation of phosphorus is secondary treatment tertiary treatment primary treatment both (a) and (b) TRUE ANSWER : ? YOUR ANSWER : ?
All of the following species are considered coliforms except Enterobacter aerogenes Escherichia coli Salmonella typhi Klebsiella pneumoniae 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 : ?
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 Redfield ratio Winogradsky column microbial loop Gibbs free energy 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 MUG membrane filtration Winogradsky TRUE ANSWER : ? YOUR ANSWER : ?
The sulfur pearl of Namibia, Thiomargarita namibiensis Both (a) and (b) is the worlds largest bacterium is the worlds smallest bacterium stores high concentrations of nitrate in a huge internal vacuole which takes up 98% of the organisms volume TRUE ANSWER : ? YOUR ANSWER : ?