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Get Answers to all your Questions
- #Class 11
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- #Cell Structure and Function
Cytoskeleton is ______ and provides ________ to the cells.
Lattice of DNA; hereditary characters
Lattice of proteins; shape
Lattice of proteins; nutrition
Lattice of sugars; nutrition
Answers (1)
Origin and Structure of Eukaryotic Cell -
Origin and Structure of Eukaryotic Cell
- The eukaryotic cells are believed to have originated through plasma membrane invagination and endosymbiotic theory.
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According to these hypotheses, eukaryotic cells have formed the nucleus through invagination of the plasma membrane around the nucleoid.
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The endomembrane system was formed due to the proliferation of the infolded plasma membrane.
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The semi-autonomous organelles mitochondria and chloroplasts were free-living prokaryotes that were engulfed by the eukaryotic cell ancestor.
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Eukaryotic cells are internally compartmentalized. These compartments are called organelles.
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Organelles are membrane-bound structures with specific sets of functions.
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In protists, fungi and plants, the cell wall is the outermost covering followed by the plasma membrane. In animal cells, the cell wall is absent.
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Eukaryotic cells have a lattice of proteins called cytoskeleton. It provides shape and allows the movement of cell organelles
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Cytoskeleton is a lattice of protein fibres that provides shape to the cell.
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