Which histone(s) are associated with the linker DNA of a nucleosome? Histone H3 Histone H4 Histones H2A and H2B Histone H1 TRUE ANSWER : ? YOUR ANSWER : ?
Proteins involved in opening a replication bubble are DNA helicases DNA topoisomerase ligase single stranded binding proteins TRUE ANSWER : ? YOUR ANSWER : ?
If one cell has AT contents 40%, what will be the percentage of Guanine residue? Guanine residue can not be calculated 60% 30% 15% TRUE ANSWER : ? YOUR ANSWER : ?
For the DNA replication in eukaryotes, the cell cycle consists of S, G2 and M phases G2 and M phases G1,S, G2 and M phases G1, G2 and M phases TRUE ANSWER : ? YOUR ANSWER : ?
Who's X-ray work aided Watson and Crick in their discovery of the double helix? W.H. Bragg Leaderberg L. Pauling R. Franklin TRUE ANSWER : ? YOUR ANSWER : ?
In a cesium chloride gradient, DNA labeled with 15N and centrifuged will form a band below DNA containing 14N all of these with 14N-containing DNA above DNA containing 14N TRUE ANSWER : ? YOUR ANSWER : ?
What is the range of melting point temperatures (Tm) for most DNA molecules? 80 to l00°C 70 to 90°C 50 to 60°C 60 to 80°C TRUE ANSWER : ? YOUR ANSWER : ?
An important difference between eukaryotic and prokaryotic DNA replication is RNA primers are not required in eukaryotes more DNA polymerases are found in eukaryotes multiple origins of replication in eukaryotes eukaryotic DNA polymerases are faster TRUE ANSWER : ? YOUR ANSWER : ?
During conventional transformation experiments E. coli cells and plasmid DNA interacts in an environment of low temperature and Mg++ high temperature and Ca++ high temperature and Mg++ low temperature and Ca++ TRUE ANSWER : ? YOUR ANSWER : ?
The melting of 40-45 bp at the oriC site of E. coli requires DNA + ATP + HU + DNAb + DNAa + Pol III holoenzyme DNA+ ATP + HU + DNAb + DNAa DNA + ATP + HU + DNAb DNA + ATP + HU TRUE ANSWER : ? YOUR ANSWER : ?