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TLS Online TPP Program

#Question id: 11130

Which of the following electrical events is characteristic of inhibitory synaptic interactions?

#Unit 7. System Physiology – Animal
  1. A neurotransmitter agent that selectively opens ligand-gated chloride channels is the basis for an inhibitory postsynaptic potential
  2. Because the Nernst potential for chloride is about −70 mV, chloride ions tend to move out of the cell along its electrochemical gradient
  3. A neurotransmitter that selectively opens potassium channels will allow potassium to move into the cell
  4. An increase in the extracellular sodium concentration usually leads directly to an inhibitory postsynaptic potential
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TLS Online TPP Program

#Question id: 4932

#Unit 10. Ecological Principles

Which of the following is the best hypothesis regarding origins of nucleic acids?
TLS Online TPP Program

#Question id: 24168

#General Aptitude

___________________. It rained in April; it rained in May. It rained in the mornings; it rained in the afternoons. It poured, it drizzled, it showered, it misted—but always it rained. But the good news is we won’t have a drought this summer.
TLS Online TPP Program

#Question id: 11280

#Unit 10. Ecological Principles

Ecosystem services include processes that increase the quality of the abiotic environment. Which of the following processes would fall under this category?
TLS Online TPP Program

#Question id: 15196

#Unit 8. Inheritance Biology

In the following pedigree shows the segregation of two different recessive traits.
Derive a general equation relating the probability that the child will have both traits expressed as a function of the distance between the markers in cM.
TLS Online TPP Program

#Question id: 375

#Unit 1. Molecules and their Interaction Relevant to Biology

The aqueous solution with the lowest pH is: