What is the function of histone proteins? to package DNA in eukaryotic chromosomes to attach sister chromatids together to connect chromosomes to the mitotic spindle to organize the microtubules that make up the spindle
Structure and Composition of Cell Membrane
Despite differences in structure and function, all living cells in multicellular organisms are surrounded by a cell membrane. Just like the outer layer of the skin separates the body from its environment similarly, the cell membrane, also known as 'plasma membrane,' separates the inner content from its exterior environment.
Cell Membrane
The cell membrane is known by different names like plasma membrane or cytoplasmic membrane, or biological membrane. The term "cell membrane" was first introduced by C. Nageli and C. Cramer in the year 1855. Later on, in 1931, the term "plasmalemma" for cell membrane was given by J. Plowe. The cell membrane separates the cell's internal environment from the extracellular space. This separation allows the protection of cells from their environment.
Prokaryotes vs Eukaryotes
The cell is defined as the basic structural and functional unit of life. The cell membrane bounds it. It is capable of independent existence.
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DNA is the genetic material in most of the organisms . The DNA with histone and non histones constitute the chromatin. The chromatin organized into chromosomes during cell division and is composed of two chromatids.
In biology, histone proteins are highly basic Proteins found in eukaryotic cell nuclei that pack and order the DNA into structural units called nucleosomes . Histones are abundant in lysine and arginine. Histones are cheif protein components of chromatin , acting as spools around which DNA winds and playing a role in gene regulation
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