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TLS Online TPP Program

#Question id: 4601

DDT was once considered a "silver bullet" that would permanently eradicate insect pests. Instead, DDT is largely useless against many insects. Which of these would have prevented this evolution of DDT resistance in insect pests?

#SCPH28 | Zoology

  1. All habitats should have received applications of DDT at about the same time.

  2. The frequency of DDT application should have been higher.

  3. None of the insect pests would have genetic variations that resulted in DDT resistance.

  4. DDT application should have been continual.

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TLS Online TPP Program

#Question id: 459

#SCPH05 I Biotechnology

Calculate △G°ʹ for the reaction shown if the mass action ratio, Q, is 5.3 × 102 M-1 and △G is 46 kJ/mol at a temperature of 298 K. (R = 8.315 J/K-mol)

ADP + Pi ⇌ ATP
TLS Online TPP Program

#Question id: 1691

#SCPH01 Biochemistry

What is the structure recognized by the αβ T-cell receptor on the cell surface of an antigen-presenting cell?
TLS Online TPP Program

#Question id: 26903

#SCPH06 I Botany

 Our ability to distinguish different biomes under similar conditions in different parts of the world depends primarily on which of the following factors that influence the distributions of growth forms?
TLS Online TPP Program

#Question id: 768

#SCPH28 | Zoology

MicroRNAs are important gene regulators, but the miRNAs are also regulated in turn by other RNAs. Which, if any, of the following classes of RNA are not known to contain RNAs that regulate miRNAs?
TLS Online TPP Program

#Question id: 5766

#SCPH28 | Zoology

Turner syndrome in humans is caused by which chromosomal conditions?