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MPSC Cell(पेशी)-MPSC Biology science notes

Cell(पेशी)


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Cell Structure

Introduction of Cell(पेशी)

Author

By Shubham Vyawahare

17-November-2024
➤ Every Body is made up with cell.
➤cell is the smallest part of a body.
➤Every cells has its quality and special functionality.
➤ In Latin Cell means a small rooms
➤ It Was Discovered by Robert hook in 1665.
➤ Every Living and non living things are made up of cells.
➤ The Study of cell know as Cytology(पेशी विज्ञान).
➤ CellS are made up with existing cells.
➤ Cells Are the Functional and fundamental components of a body.

✪ Types OF Cell ✪


  1. Eukaryotic Cell
  2. Prokaryotic Cell

Eukaryotic Cell


➤ Cell with a membrane bound Organelle are known as Eukaryotic Cell.
➤ Well Defined Nucleus.
➤ large shape cells almost 5-10 micrometer.
➤ It found in developed living animals like humans .

Prokaryotic Cell


➤ Cell without a membrane bound Organelle are known as Prokaryotic Cell.
➤ Not Defined Nucleus.very Simple Cell
➤Less functional components found like Plasma membrane cytoplasm.
➤ Very Small in shape.

✪ Structure Of Cell ✪


➤Cell Are the building blocks of a body.

1.ShapeOfCell


➤Cells have a different sizes range from 0.1um to 18 cm
➤ Generally cells are smaller in shape.
➤ Unit of cell shape calculation is micrometer.
➤ Nervous cell is the longest cell in human body.
➤ Eggs cell is the biggest cell in human body.
➤ Cell shape are depends on there working.

✪ Cell Body Structure ✪




➤ Cells are the building blocks of body but cell has his own body.
➤ Following are the main 4 component of a cell structure
  • Cell Wall
  • Plasma
  • CytoPlasma
  • CellOrganelles

      Cell Wall


      ➤ Outer shape of a body
      ➤ It prevents cell from any damage.
      ➤ Generally Found in plant body
      ➤ It found in a outer side of cellulose plasma membrane
      ➤ The Main functional work of a cell wall is to protect a cell structure and protect from damages.
      ➤ Cell Perform a osmosis effect
      ➤ Means it change its shape with physical conditions

      Plasma


      ➤ The plasma membrane refers both to the membrane that surrounds cells and also to the membranes that surround organelles within the cel
      ➤The membrane is made of a lipid bilayer (the red/orange/yellow stuff in the above diagram).
      ➤ The plasma membranes of mammalian red blood cells (erythrocytes) have been particularly useful as a model for studies of membrane structure.
      ➤ The bilayer structure of the erythrocyte plasma membrane is clearly evident in high-magnification electron micrographs.
      ➤ This are the functions of plasma membrane A Physical Barrier Selective Permeability Endocytosis and Exocytosis. Cell Signaling Proteins. Carbohydrates Fluid Mosaic Model.
      ➤Size of a plasma membrane is 20 nm thick.".
      ➤Fiber-rich foods such as whole grains, leafy vegetables and fresh fruits will add bulk to your feces and help stimulate the bowel to push food along
      ➤membrane found in all cells that separates the interior of the cell from the outside environment. In bacterial and plant cells
      ➤Plasma membrane maintain homeostasis (the state of steady internal, physical, and chemical conditions maintained by systems).



      CytoPlasma


      ➤ The Outer side of a cell is cytoplasma ➤Found in plasma and nucleolus membrane
      ➤Its very sticky in nature
      ➤It perform chemical reactions of cell.
      ➤It is a storage unit of cell.like to store amino acid and glucose

      Cell Organelles


      ➤ The Functional and executive part of body divide in further components.

      Nuclues


      ➤ Central part of a cell.
      ➤ Take place in the all functional work.
      ➤ It is like a brain part of cell.
      ➤ Perform all the operations
      ➤ Control all work and body balances
      ➤This part has a lots of holes so water comes ouside in a cytoplasm.
      ➤It Consists a pair of chromosomes and maintain a network of chromosomes

      EndoPlasmic Recticulum


      ➤ The endoplasmic reticulum is a type of organelle made up of twounits rough endoplasmic reticulum (RER), and smooth endoplasmic reticulum (SER) ....
      ➤ Co related with inner and outer membrane.
      ➤ The endoplasmic reticulum is only present in the eukaryotic cells. However, the occurrence of the endoplasmic reticulum varies from cell to cell. .
      ➤ The endoplasmic reticulum acts as secretory, storage, circulatory and nervous system for the cell. It is also the site of the biogenesis of cellular membranes.
      ➤ The cavity of the endoplasmic reticulum is well developed and acts as a passage for the secretory products.
      ➤endoplasmic reticulum may occur in the following three forms: Lamellar form or cisternae Vesicular form or vesicle and Tubular form or tubules. .

      Golgi Appratus


      ➤ Found by a Goldi scientist.
      ➤ know for the Chemical factory of cells.
      ➤ Lots of enzymes present here.
      ➤ Functions of a GolgiAppratus Formation of secretory vesicles and secretion, Helps in enzyme formation, Production of hormones, Storage of protein.

      Lysosome


      ➤ Not Found in the rbc of mammals.
      ➤ Lysosomes are spherical, membrane bound organelles that are generated by the golgi apparatus. They contain hydrolytic enzymes, and so function as part of the recycling system of the cell..
      ➤ This is the digestive systems of a body.
      ➤ The lysosomes are located in the cytosol of the cytoplasm in a eukaryotic cell. Take note that lysosomes are only found in animal cells and not plant cells.
      ➤ Each lysosome is surrounded by a membrane that maintains an acidic environment within the interior via a proton pump.
      ➤Lysosomes contain a wide variety of hydrolytic enzymes (acid hydrolases) that break down macromolecules such as nucleic acids, proteins, and polysaccharides.

      Mitochondria


      ➤ 50 to 500 Mitochondria found in cell.
      ➤ Storage house of a energy.
      ➤ phosphate molucule and DNA found in Mitochondria vault.
      ➤ Mitochondria are functional body of inhalation of oxygen
      ➤ The mitochondrion is the site of ATP synthesis for the cell
      ➤The number of mitochondria found in a cell are therefore a good indicator of the cell's rate of metabolic activity; cells which are very metabolically active, such as hepatocytes, will have many mitochondria.

      Plastids


      ➤ Central part of a cell.
      ➤ Take place in the all functional work.
      ➤ It is like a brain part of cell.
      ➤ Perform all the operations
      ➤ Control all work and body balances
      ➤This part has a lots of holes so water comes outside in a cytoplasm.
      ➤It Consists a pair of chromosomes and maintain a network of chromosomes

      Vacuoles


      ➤ It Store a liquid and food component in cell.
      ➤ Plant have a large Vacuoles than the animals.
      ➤ Vacuoles Found in a plants are permanent and other hand its not permanent in animals.
      ➤ a space within a cell that is empty of cytoplasm, lined with a membrane, and filled with fluid
      ➤ contribute to the rigidity of the plant using water to develop hydrostatic pressure
      ➤ store nutrient and non-nutrient chemicals.
      ➤ Remove and store harmful foreign products so they don't damage the cell.




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