1. Why is DNA usually found in the form of chromatin?
a. it's energetically expensive to coil DNA
b. hydrogen bonding holds it that way
c. it has to be accessible for reading instructions. In otherwords, DNA that is unraveled as chromatin is able to have its genes transcribed.
Edit: I think its "C" too because there are two phases that Chromatin is in... when the cell is not dividing it is in its unbundled state, sort of free floating in the nucleus. In it's other state, it becomes double wrapped around 8 proteins and are linked to each other via Linker DNA.
2. What is the benefit of having DNA repackaged (in tight bundles called chromosomes) prior to cell division?
a. space-saving mechanism
b. allows for easier copying of genes
c. minimizes entangling of long strands of DNA, thus reducing the chance of losing vital pieces on information
d. none of the above: DNA is always packaged as chromosomes throughout the cell cycle
Edit: It is C.
a. it's energetically expensive to coil DNA
b. hydrogen bonding holds it that way
c. it has to be accessible for reading instructions. In otherwords, DNA that is unraveled as chromatin is able to have its genes transcribed.
Edit: I think its "C" too because there are two phases that Chromatin is in... when the cell is not dividing it is in its unbundled state, sort of free floating in the nucleus. In it's other state, it becomes double wrapped around 8 proteins and are linked to each other via Linker DNA.
2. What is the benefit of having DNA repackaged (in tight bundles called chromosomes) prior to cell division?
a. space-saving mechanism
b. allows for easier copying of genes
c. minimizes entangling of long strands of DNA, thus reducing the chance of losing vital pieces on information
d. none of the above: DNA is always packaged as chromosomes throughout the cell cycle
Edit: It is C.
