Practice Questions

TLS Online TPP Program

#Question id: 11201

Why are action potentials usually conducted in one direction?

#Unit 7. System Physiology – Animal

The nodes of Ranvier conduct potentials in one direction.
The brief refractory period prevents reopening of voltage-gated sodium channels.
The axon hillock has a higher membrane potential than the terminals of the axon.
Voltage-gated channels for both Na+ and K+ open in only one direction.

More Questions

TLS Online TPP Program

#Question id: 28867

#Unit 2. Cellular Organization

During Detyrosylation, tyrosine can be removed by a carboxypeptidase, where it sequentially removes the C-terminal tyrosine

TLS Online TPP Program

#Question id: 28868

#Unit 2. Cellular Organization

Which type of Post-translational modifications are likely mutually exclusive, so they would not normally occur at the same time but both can enhance microtubule stability?

TLS Online TPP Program

#Question id: 28869

#Unit 2. Cellular Organization

Which of the following protein associates preferentially with detyrosylated and acetylated microtubules?

TLS Online TPP Program

#Question id: 28870

#Unit 2. Cellular Organization

Which of the following modification has a key role in the beating of cilia and flagella ?

TLS Online TPP Program

#Question id: 28871

#Unit 4. Cell Communication and Cell Signaling

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