Practice Questions

TLS Online TPP Program

#Question id: 11201

Why are action potentials usually conducted in one direction?

#Part-A Aptitude & General Biotechnology

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: 11191

#Part-B Specialized Branches in Biotechnology

Opening all of the sodium channels on an otherwise typical neuron, with all other ion channels closed (which is an admittedly artificial setting), should move its membrane potential to ________.

TLS Online TPP Program

#Question id: 12823

#Part-A Aptitude & General Biotechnology

A lawn is in the form of a rectangle having its breadth and length in the ratio 3 : 4. The area of the lawn is 1/12 hectare. The breadth of the lawn is

TLS Online TPP Program

#Question id: 18757

#Part-A Aptitude & General Biotechnology

which phage is used in oligonucleotide directed mutagenesis?

TLS Online TPP Program

#Question id: 316

#Part-A Aptitude & General Biotechnology

Which of these noncovalent forces in biological systems is usually the strongest?