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TLS Online TPP Program

#Id: 7744

An ionic radius is one-half the distance between the nuclei of two ions in an ionic bond.


#Unit 1. Molecules and their Interaction Relevant to Biology #Structure of atoms #Part B Pointers
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TLS Online TPP Program

#Id: 433

#Unit 2. Cellular Organization

The nucleosome is a disc with DNA organized into 12/3 turns around the surface.
TLS Online TPP Program

#Id: 434

#Unit 2. Cellular Organization

The nucleosome is a disc of 11 nm diameter and 6 nm height. 2πrh is surface are and πr2h is volume of nucleosome
 
TLS Online TPP Program

#Id: 435

#Unit 2. Cellular Organization

The nucleosome consists of approximately equal masses of DNA and histones (including H1). The predicted mass of the nucleosome is 262 kD.
TLS Online TPP Program

#Id: 436

#Unit 2. Cellular Organization

The four core histones are present in equal amounts in the cell. H1 is half as abundant as the other histones, which is consistent with the finding that only one molecule of H1 can associate with a nucleosome.
TLS Online TPP Program

#Id: 437

#Unit 2. Cellular Organization

One turn around the nucleosome takes 80 bp of DNA
TLS Online TPP Program

#Id: 438

#Unit 2. Cellular Organization

Two points separated by 80 bp in the free double helix may actually be one on another on nucleosome surface.