Practice Questions

TLS Online TPP Program

#Question id: 4001

Which is not true about the lac repressor?

#Unit 1. Molecules and their Interaction Relevant to Biology

Its gene is part of the lac operon and is transcribed along with lacZ, lacA and lacY.
When it binds to DNA, it forms a loop-type structure.
It likely blocks both RNA polymerase binding as well as transcription initiation.
It binds to DNA by interaction of an α-helix with the major groove.

More Questions

TLS Online TPP Program

#Question id: 23842

#Unit 2. Cellular Organization

Which actions requires energy from ATP hydrolysis ?

TLS Online TPP Program

#Question id: 23843

#Unit 2. Cellular Organization

Thick-filament regulation is,

TLS Online TPP Program

#Question id: 23844

#Unit 2. Cellular Organization

Thin-filament regulation is,

TLS Online TPP Program

#Question id: 23845

#Unit 2. Cellular Organization

Which type of molecules bind to myosin head during the skeletal muscle contraction?

TLS Online TPP Program

#Question id: 23846

#Unit 2. Cellular Organization

Which regulatory protein is blocking actin and myosin from binding?

TLS Online TPP Program

#Question id: 23847

#Unit 2. Cellular Organization

Which group of external signals regulated by Smooth muscle cells and non-muscle cells?