histones
no one cares.
Once DNA has replicated, it condenses when negatively charged phosphate groups interact with positively charged protein molecules known as histones. This interaction helps to package the DNA into a more compact structure, known as chromatin, which plays a role in regulating gene expression.
DNA is negatively charged because of the phosphate groups in its structure. This negative charge allows DNA to interact with positively charged molecules, such as proteins, in biological processes like gene expression and replication. The attraction between the negatively charged DNA and positively charged molecules helps regulate these processes and ensures they occur correctly.
histones
Since DNA has a phosphate group it has a negative charge and so it is attracted by a positive charge.
Not necessarily. Solute molecules can be neutral, positively charged, or negatively charged in water. The charge of the solute molecule depends on its chemical structure and the presence of any functional groups that can interact with water molecules.
DNA precipitates in alcohol due to its hydrophobic nature and the presence of phosphate groups that interact with alcohol molecules. When DNA is mixed with alcohol, the hydrophobic regions of the DNA interact with the alcohol molecules, causing the DNA to clump together and precipitate out of solution. Additionally, the negatively charged phosphate groups on the DNA backbone can form interactions with the positively charged ions present in alcohol, further promoting DNA precipitation.
The phosphate group is hydrophilic, meaning it has an affinity for water. It contains charged atoms (such as oxygen) that readily interact with water molecules through hydrogen bonding.
Phosphate molecules.
Yes, basic dyes are positively charged. This property allows them to interact with biological molecules, which are often negatively charged, through electrostatic attractions. This interaction helps basic dyes to bind to and stain specific components of cells and tissues, aiding in their visualization under a microscope.
Disodium phosphate is an ionic compound, not a covalent one. It consists of positively charged sodium ions and negatively charged phosphate ions, which are held together by electrostatic attractions.
While glass is positively charged, the oxygen in the DNA, which is negatively charged, is attracted to it, making it "sticky". DNA is mostly composed of oxygen meaning that it can stick to pretty much anything.