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TLS Online TPP Program

#Question id: 9235

Agricultural lands frequently require nutrient augmentation because ________.

#SCPH28 | Zoology

  1. nitrogen-fixing bacteria are not as plentiful in agricultural soils because of the use of pesticides

  2. the nutrients that become the biomass of plants are not cycled back to the soil on lands where they are harvested

  3. land that is available for agriculture tends to be nutrient-poor
  4. cultivation of agricultural land inhibits the decomposition of organic matter
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TLS Online TPP Program

#Question id: 5755

#SCPH06 I Botany

A researcher studying bacterial toxin predicts that a lysine within the toxin is important for binding it’s target cell.  She used site-directed mutagenesis to change a codon for lysine (AAA) to one for asparagine (AAU).  However, the mutant toxin still binds to its target cell just as well as the wild-type toxin bound and appears to have no other changes. This type of mutation is probably
TLS Online TPP Program

#Question id: 41

#SCPH05 I Biotechnology

Enzymes are biological catalysts that enhance the rate of reaction by:
TLS Online TPP Program

#Question id: 19509

#SCPH05 I Biotechnology

Which of the following elements has the maximum negative electron gain enthalpy?
TLS Online TPP Program

#Question id: 3013

#I Life Science/ Life Sciences Group – I-V

Bacteria survive adverse conditions by forming
TLS Online TPP Program

#Question id: 5056

#SCPH28 | Zoology

Cells of the responding tissue must have both a receptor protein for the inducing factor and the ability to respond to the signal. The ability to respond to a specific inductive signal is called as