Cell
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The document discusses the structure and function of cells. It describes cells as the basic unit of life and divides them into two groups: prokaryotic and eukaryotic cells. Prokaryotic cells like bacteria are unicellular and have a simple structure with a cell membrane, cell wall, ribosomes, and sometimes flagella or pili. Eukaryotic cells found in plants, animals, fungi and protozoa are larger, more complex with internal structures like a nucleus, and can be unicellular or multicellular.
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Std 11 unit 8 cell
The document discusses cells, which are the basic units of life. It covers the milestones in the discovery of cells, defines what a cell is, explains the cell theory, and discusses the number, size, shape, and types of cells. The key points are:
- Cells were first observed by Robert Hooke in 1665 and are the smallest units of living matter that compose all living things.
- The cell theory established that all organisms are made of cells, cells are the basic units of life, and new cells are produced from existing cells.
- There are three main types of cells: prokaryotic, eukaryotic, and mesokaryotic, which differ in their nuclear and
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- The main parts of eukaryotic cells are the cell membrane, cytoplasm, organelles like mitochondria and the nucleus. Plant cells additionally contain chloroplasts and a cell wall.
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The document discusses cells, which are the basic units of life. It covers the milestones in the discovery of cells, defines what a cell is, explains the cell theory, and discusses the number, size, shape, and types of cells. The key points are:
- Cells were first observed by Robert Hooke in 1665 and are the smallest units of living matter that compose all living things.
- The cell theory established that all organisms are made of cells, cells are the basic units of life, and new cells are produced from existing cells.
- There are three main types of cells: prokaryotic, eukaryotic, and mesokaryotic, which differ in their nuclear and
Cell as basic unit of life ppt 88 slides
This Power point presentation describes Cell as basic unit of life. The slides provide information about Discovery of cell,cell theory,number,size,shape and cell types .Differentiates prokaryotic and eukaryotic cell types and point out major differences in plant and animal cell and also about structure and function of cell organelles
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Bed Making ( Introduction, Purpose, Types, Articles, Scientific principles, N...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
What is Digital Literacy? A guest blog from Andy McLaughlin, University of Ab...
Cell
- 1. Structure and function of cell
- 2. cell The cell is a structure and functional unit of life. Living cell divided into two groups,i.e. the Prokaryotic and eukaryotic
- 3. PROKARYOTIC CELLS The simplest form of cell is a prokaryotic cell E.g. bacteria are unicellular and have one of the three basic shapes, viz. spheroidal , rod like,and helically coiled
- 4. Organellles of prokaryotic cell Cell wall Plasma membrane Ribosome Nucleoid Pili flagella
- 5. EUKARYOTIC CELL Animals, plants, fungi and protozoa are called eukaryotic which may be unicellular or multicellular Eukaryotic cells are one to ten times large in size and are more complex in structure
- 6. Difference between prokaryotic and eukaryotic cell structure parameters Prokaryotic cells Eukaryotic cells Cell size small large Overall organization simple complex boundary Cell membrane and cell wall , sometimes by a capsule Cell membrane Subcellular entities few many nucleus Have a single nucleus which contains double helix DNA that is present in a poorly defined region called nucleoid Well defined nucleus examples bacteria Plant and animal cells