Practice Questions

TLS Online TPP Program

#Question id: 11130

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

#Unit 7. System Physiology – Animal

A neurotransmitter agent that selectively opens ligand-gated chloride channels is the basis for an inhibitory postsynaptic potential
Because the Nernst potential for chloride is about −70 mV, chloride ions tend to move out of the cell along its electrochemical gradient
A neurotransmitter that selectively opens potassium channels will allow potassium to move into the cell
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: 2195

#Unit 2. Cellular Organization

Which of the following statements about the mobility of membrane components is true?

TLS Online TPP Program

#Question id: 2196

#Unit 2. Cellular Organization

Substance X is a charged molecule of small molecular weight. It is found at higher concentrations outside of cells than inside. How might substance X enter cells?

TLS Online TPP Program

#Question id: 2197

#Unit 2. Cellular Organization

If a freshwater plant were put in sea water, its cells would:

TLS Online TPP Program

#Question id: 2198

#Unit 2. Cellular Organization

The cell in number (15) above would be in an environment that was:

TLS Online TPP Program

#Question id: 2199

#Unit 2. Cellular Organization

Which of the following is not an example of an ion transporter?