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TLS Online TPP Program

#Question id: 11197

After the depolarization phase of an action potential, the resting potential is restored by ________.

#I Life Science/ Life Sciences Group – I-V
  1. the opening of voltage-gated potassium channels and the inactivation of sodium channels
  2. a decrease in the membrane's permeability to potassium and chloride ions
  3. a brief inhibition of the sodium-potassium pump
  4. the opening of more voltage-gated sodium channels
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TLS Online TPP Program

#Question id: 4168

#SCPH28 | Zoology

The deaminoacylated tRNA leaves the ribosome as the growing polypeptide passes through the tunnel of the large ribosomal subunit from the __.
TLS Online TPP Program

#Question id: 15272

#SCPH28 | Zoology

During the RNA extraction guanidinium thiocyanate functions as a strong inhibitor of
TLS Online TPP Program

#Question id: 10349

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

Elevated plastid levels of glutamine stimulate the activity of glutamate synthase (also known as glutamine:2- oxoglutarate aminotransferase, or GOGAT). Given below some of the statements about GOGAT, which one of the following is incorrect?
TLS Online TPP Program

#Question id: 9192

#SCPH06 I Botany

The oak tree pathogen Phytophthora ramorum has migrated 650 km in ten years. West Nile virus spread from New York State to 46 others states in five years. The difference in the rate of spread is probably related to
TLS Online TPP Program

#Question id: 4958

#SCPH06 I Botany

What is true of the fossil record of mammalian origins?