Which of the following statements about eukaryotes is correct? - Eukaryotes are life forms that possess a nucleus in the cells. - Some cellular features, such as endoplasmic reticulum, is uniquely eukaryotic and is not shared with either bacteria or archaea. - It has been hypothesized that the first eukaryotic cell is a chimera between a bacterium and an archaeon. - During phylogenetic reconstruction, it is often found that eukaryotic genes that are responsible for information processing are more closely related to corresponding archaeal genes than to bacterial genes. - All of the above
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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Which of the following statements about eukaryotes is correct?
- Eukaryotes are life forms that possess a nucleus in the cells.- Some cellular features, such as endoplasmic reticulum, is uniquely eukaryotic and is not shared with either bacteria or archaea.- It has been hypothesized that the first eukaryotic cell is a chimera between a bacterium and an archaeon.- During phylogenetic reconstruction, it is often found that eukaryotic genes that are responsible for information processing are more closely related to corresponding archaeal genes than to bacterial genes.- All of the above
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