DNA that is typically loosely spread out as thin threads within the nucleus is known as ________. nucleosome chromatin chromosome chromatid double helix
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.
DNA that is typically loosely spread out as thin threads within the nucleus is known as ________.
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nucleosome
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chromatin
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chromosome
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chromatid
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double helix
The DNA that is typically loosely spread out as thin threads within the nucleus is known as chromatin.
Chromatin is a complex of DNA and proteins that is found in the nuclei of eukaryotic cells. It is responsible for packaging the DNA into a more compact structure, which makes it easier to fit inside the nucleus and to regulate gene expression.
Chromatin is not always the same structure. It can be more or less compact depending on the cell type and the stage of the cell cycle. For example, chromatin is more compact in cells that are dividing than in cells that are not dividing.
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