BIO 203 Although the chromatin structure of interphase and mitotic chromosomes is very compact, DNA-binding proteins and protein complexes must be able to gain access to the DNA molecule. Chromatin-remodeling complexes provide this access by ___.

Altering the extent of DNA supercoiling.

Explanation:

Chromatin Remodeling complexes provides access of transcriptional and regulatory activities to the DNA by changing the chromatin structure which is done by altering the extent of DNA supercoiling. Altering the extent of DNA supercoiling will give rise to a loose chromatin structure that the transcriptional and regulatory activities machinery can have access to. They include factors such as histone chaperones, histone modifying enzymes and ATP-dependent chromatin remodeling complexes.

Such mechanisms which the chromatin undergo include reconstruction: where nucleosomes undergo some compositional changes using special histone variants etc; enzyme induced covalent modification: which include acetylation, methylation, phosphorylation etc of histone tails; repositioning: such as histone chaperones mediating removal of histone from chromatin.

liquid crystals are matters in a state which have properties between those of conventional liquids and those of solid crystals[1]. liquid crystal is partially ordered and anisotropic. in terms of molecular order, liquid crystal molecules have one-dimensional or two-dimensional long - range order.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.