Which of the following statements is INCORRECT regarding the assembly of DNA into higher-order chromatin structure?

I. Histone H1 is not part of the histone octamer, but binds to linker DNA and is responsible for higher-order chromatin structure.

II. The 30 nm fibers of a chromosome are attached to a/an RNA-protein scaffold that holds the fibers in large loops.

III. It is not possible for linear DNA to be supercoiled. Only circular DNA, which has no ends, can have regions of supercoiling.

IV. Core histones lacking their amino-terminal tails are capable of forming 30-nm fibers as they help to stabilize the 30-nm fiber in internucleosomal interactions.

TLS Online TPP Program

#Question id: 26527

#Unit 3. Fundamental Processes

Which of the protein is essential for RNA pol I based transcription

TLS Online TPP Program

#Question id: 1024

#Unit 4. Cell Communication and Cell Signaling

The cell wall of Gram-positive bacteria

TLS Online TPP Program

#Question id: 26508

#Unit 3. Fundamental Processes

Which of the following are true regarding the splicing of tRNA 

a.RnaseP cuts at 5’ end 

b.RnaseD cuts at 3’ end 

c.Base modification followed by CCA addition by specific polymerase

d.And then final script of 78 bp formed

TLS Online TPP Program

#Question id: 4056

#Unit 3. Fundamental Processes

Operon having positive and negative regulation by single regulatory protein is

TLS Online TPP Program

#Question id: 7537

#General Aptitude

A train 220m long passed a pole in 20 seconds. How long it will take to pass a platform 550m long?