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TLS Online TPP Program

#Question id: 11206

Tetrodotoxin blocks voltage-gated sodium channels, and ouabain blocks sodium-potassium pumps. If you added both tetrodotoxin and ouabain to a solution containing neural tissue, what responses would you expect?

#Unit 7. System Physiology – Animal
  1. immediate loss of resting potential
  2. immediate loss of action potential with gradual shift of resting potential
  3. slow decrease of resting potential and action potential amplitudes
  4. No effect; the substances counteract each other.
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TLS Online TPP Program

#Question id: 4304

#Unit 3. Fundamental Processes

Using codon table, identify a 5′ → 3′ sequence of nucleotides in the DNA template strand for an mRNA coding for the polypeptide sequence Phe-Pro-Lys.
TLS Online TPP Program

#Question id: 5756

#Unit 8. Inheritance Biology

Type of mutation caused by an addition or deletion of a base in a polypeptide-encoding part of a gene
TLS Online TPP Program

#Question id: 21277

#Unit 12. Applied Biology

Which one of the following is a carbon nanotube bent in a torus shape that is doughnut shape?
TLS Online TPP Program

#Question id: 12198

#Unit 6. System Physiology – Plant

In theory, auxin could increase the rate of proton extrusion by some possible mechanisms such as:
a) Activation of pre-existing plasma membrane H+- ATPases
b) Synthesis of new H+-ATPases on the plasma membrane
c) Auxin-Induced Proton Extrusion May Involve Both Activation and Synthesis
TLS Online TPP Program

#Question id: 5230

#Unit 11. Evolution and Behavior

Homeotic genes