Which of the following species in water reveal the presence of fecal pollution of human or animal origin? Clostridium perfringens All of these E.coli Fecal Streptococci TRUE ANSWER : ? YOUR ANSWER : ?
Removal of solids is generally considered as a Tertiary treatment None of these Primary treatment Secondary treatment TRUE ANSWER : ? YOUR ANSWER : ?
All of the following species are considered coliforms except Salmonella typhi Klebsiella pneumoniae Escherichia coli Enterobacter aerogenes TRUE ANSWER : ? YOUR ANSWER : ?
Chemical precipitation of phosphorus is secondary treatment primary treatment tertiary treatment both (a) and (b) TRUE ANSWER : ? YOUR ANSWER : ?
__________ 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; lakes low oxygen diffusion environment; soils TRUE ANSWER : ? YOUR ANSWER : ?
Members of all of the following genera of bacteria typically are found in a maturing Winogradsky column except Rhodospirillum Chlorobium Escherichia Clostridium 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 lesser half greater 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 Redfield ratio Gibbs free energy microbial loop TRUE ANSWER : ? YOUR ANSWER : ?
The rate of flux of oxygen in air is __________ to/than the rate of flux of oxygen in water. greater approximately equal half lesser TRUE ANSWER : ? YOUR ANSWER : ?
The Redfield ratio is an index of concentration of carbon, nitrogen and phosphorous carbon, hydrogen and oxygen nitrogen, potassium and iron carbon, phosphorous and sulfur TRUE ANSWER : ? YOUR ANSWER : ?