CELL STRUCTURE by Bindu Mishra https://padlet.com/bmishra/lyl8gmlrsniblwb6 CELL ORGANELLLES AND ITS FUNCTIONS en-us 2021-06-17 04:33:42 UTC 2024-05-31 04:38:24 UTC hello@padlet.com UNICELLULAR bmishra https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611507722 Organisms are made up of only one cell that carries out all of the functions needed by the organisms.
Example-Amoeba, paramecium, yeast etc.]]> 2021-06-17 04:38:04 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611507722 MULTICELLULAR bmishra https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611508374 Organisms are composed of more than one cell, with groups of cells differentiating to take on specialized functions.
Example-Human beings, plants, animals, birds, and insects etc.]]> 2021-06-17 04:38:31 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611508374 MICROSCOPES bmishra https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611509209 A microscope is an instrument that makes an enlarged image of a small object, thus revealing details too small to be seen by the unaided eye.]]> 2021-06-17 04:39:04 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611509209 TYPES OF MICROSCOPES bmishra https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611527433 Light microscope
  • Beam of light.
  • See color images.
  • Magnifies  ×400 to ×1500.
  •  Light microscope you can see some structures inside a cell, such as a nucleus.


Electron Microscope
  • Beam of electrons.
  • Black and white images
  • Magnifies ×40000 to ×500000
  •  Electron microscope much more detail can be seen.  
Light microscope
]]> 2021-06-17 04:51:04 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611527433 CELL MEMBRANE bmishra https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611529397
  • The cell membrane surrounds the cell.
  • Holds the cell together
  • Controls substances entering and leaving the cell.

    • ]]>     2021-06-17 04:52:29 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611529397     CELL WALL bmishra https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611529609
  • The cell wall is made of cellulose and surrounds the cell membrane in plant cells.
  • Gives the cell extra support and defines it's shape.
  • Fully permeable
  • Paper is made up of cellulose.
  • Cellulose is Polysaccharide(Carbohydrate)
  • Forms fibers which criss- cross another. It prevents the cell and prevents form bursting.

    • ]]>     2021-06-17 04:52:38 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611529609     bmishra https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611549711 2021-06-17 05:05:38 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1611549711 VACUOLE bmishra https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1613716829
  • Vacuoles are large vesicles that take up a large part of the interior of plant cells.
  • Contains cell sap.
  • Used for storage of certain materials
  • Helps support the shape of the cell.

    • ]]>     2021-06-18 04:48:40 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1613716829     CYTOPLASM bmishra https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1613717214
  • Cytoplasm is found inside the cell and contains all the other cell structures.
  • Supports cell structure.
  • Site of many chemical reactions.
  • Contains water and many solutes.

    • ]]>     2021-06-18 04:48:58 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1613717214     CHLOROPLAST bmishra https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1613718194
  • Chloroplasts are organelles found in the cytoplasm that are packed with the pigment chlorophyll and so are green in color.
  • Site of photosynthesis, providing food for plants.
  • The chlorophylls pigment absorb light energy needed for the reaction to occur.

    • ]]>     2021-06-18 04:49:44 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1613718194     NUCLEUS bmishra https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1613718346
  • The large nucleus is surrounded by a nuclear membrane to separate it from the cytoplasm.
  • Contains genetic material in chromosomes which controls how cells grow and works.
  • Controls cell division.

    • ]]>     2021-06-18 04:49:51 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1613718346     MITOCHONDRIA bmishra https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1622949446
  • They are the site of aerobic respiration in eukaryotic cells.
  •  Mitochondria are found in almost all cells, except those of prokaryotes.
  •  Mitochondria are the powerhouses of the cell.
  • Cells with high rate of metabolism will have higher numbers of mitochondria than cells with lower numbers of reactions taking place in them. 
  • Liver cell, Muscle cells have maximum number of mitochondria.
  • Sperm cells need energy to swim to the egg and nerve cells, which need energy to transmit impulses, also have large numbers of mitochondria 

    • ]]>     2021-06-24 04:32:08 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1622949446     RIBOSOMES https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1622976103
  • They look like tiny dots attached to a network of membranes that runs throughout the cytoplasm  This network is called the rough endoplasmic reticulum. 
  •  Ribosomes may also just be scattered freely in the cytoplasm. 
  •  Ribosomes are found in all types of cells – bacteria, protoctists, fungi, animals and plants all have ribosomes in their cells 
  •  They are the places where proteins are made, by joining amino acids together in a long chain. 
    • ]]>     2021-06-24 04:51:48 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1622976103     Electron Microscope https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1624829813 2021-06-25 04:45:42 UTC https://padlet.com/bmishra/lyl8gmlrsniblwb6/wish/1624829813