Practice Questions

TLS Online TPP Program

#Question id: 12006

Nitrogen is a major environmental pollutant of groundwater in many parts of the world. What is the major cause of this nitrogen accumulation in groundwater?

#10. Ecological Principles

Excessive use of nitrogen fertilizers
Destruction of nitrifying bacteria, which results in soil nitrogen remaining as NH+4
Excess soil moisture, which causes ammonification or denitrification
Presence of sandy-textured soil

More Questions

#Question id: 1040

#4. Cell Communication and Cell Signaling

Why might it be easier to determine the bacterium that caused pneumonia than one that caused a wound infection?

#Question id: 1041

#4. Cell Communication and Cell Signaling

The lactobacilli, in their role as normal flora of the vagina, help the vagina resist infection by contributing to

#Question id: 1046

#4. Cell Communication and Cell Signaling

Viruses that infect bacteria are referred to as

#Question id: 1047

#4. Cell Communication and Cell Signaling

A virion is a(n)

#Question id: 1048

#4. Cell Communication and Cell Signaling

A virion is composed of

#Question id: 1049

#4. Cell Communication and Cell Signaling

The protein coat of a virus