Answer:
When the cell has 0% sucrose I expect the cell to stay the same.
Explanation:
First of all, this question should not be confused for the statement "When the "cell" has 0% sucrose, did you expect the cell to have gained water, lost water, or stay the same. In this case, the correct answer would have been; gained water.
But, in this question, we are asked what happens to the cells at 0% sucrose concentration. At 0% (no solute) concentration, there is no net movement of water or solute into or out of the cell, because the cell is isotonic to the external environment (distilled water). Osmosis, a special kind of diffusion, is the movement of water, from areas of lower solute concentration to area of higher solute concentration, or from areas of higher water concentration to areas of lower water concentration through a semi-permeable membrane. If the water moves into the cells (hypertonic cells), then the cell gains water and increases in size, but if the cell loses water (hypotonic cell), then it reduces in size
The proteins are called Histone proteins. Chromosomal DNA is packaged such that the strands of DNA are wound around histone proteins and fold into complex ways to form chromosomes. The histone proteins are positively charged proteins that strongly adhere to negatively charged DNA and form complexes called nucleosomes. Each nucleosome is composed of double-helical DNA wrapped.
Answer:
stabilize condensed chromosomal DNA during transcription.
Explanation:
Histones are the proteins that are involved in the packaging of DNA in the nucleus. The histones are basic and are positively charged proteins that form the core and allows the wrapping of the DNA around it.
This wrapping around the histones forms nucleosome structure which further compact to form the chromosomes. The studies on histone proteins have suggested that they stabilize the condensed DNA during the process of transcription which is related to the gene expression.
Thus, the selected option is correct.
not sure what you mean, but I think you're talking about the bonds i suppose. Anti-parallel strands are connected by H-bonds, whereas the sugar and phosphorus are bonded by covalent phosphodiester bonds.
