Скачать с ютуб NCERT Class 9 Science Chapter 5: Fundamental Unit of Life | CBSE | English (NSO/NTSE/NSTSE) в хорошем качестве

NCERT Class 9 Science Chapter 5: Fundamental Unit of Life | CBSE | English (NSO/NTSE/NSTSE)

Dr. Manishika Jain explains NCERT Class 9 Science Chapter 5: Fundamental Unit of Life CBSE: https://www.doorsteptutor.com/Exams/C... NTSE: https://www.doorsteptutor.com/Exams/N... SOF NSO Class 9 - https://www.doorsteptutor.com/Exams/NSO/ Unified Council NSTSE Class 9 Preparation - https://www.doorsteptutor.com/Exams/N... Handouts @ https://www.examrace.com/Study-Materi... Non (ribosome), Single (vacuole) and double (Mitochondria) membraned organelles Osmosis & plasmolysis Only cell organelle seen in prokaryotic cell is ribosomes Why is lysosome called suicidal bag Soap solution – hypertonic (water moves out by osmosis) Bacteria do not have chloroplast but some bacteria are photoautorophic in nature and perform photosynthesis - Small vesicles associated with plasma membrane If Golgi apparatus is removed – vesicle formation stops Robert Hooke saw that the cork resembled the structure of a honeycomb consisting of many little compartments. Cork is a substance which comes from the bark of a tree. This was in the year 1665 – Cell from Latin word which means “Little Room” Onion peel in safranin/iodine/methylene blue solution under compound microscope – honeycomb – cell with nucleus (also cheek cells by toothpick) Leeuwenhoek (1674), with the improved microscope, discovered the free living cells in pond water for the first time. It was Robert Brown in 1831 who discovered the nucleus in the cell. Purkinje in 1839 coined the term ‘protoplasm’ for the fluid substance of the cell. Schleiden (1838) and Schwann (1839) – cell theory Virchow (1855) by suggesting that all cells arise from pre-existing cells. With the discovery of the electron microscope in 1940, it was possible to observe and understand the complex structure of the cell and its various organelles Unicellular organisms – Amoeba, Chlamydomonas, Paramoecium and bacteria Every multi-cellular organism has come from a single cell. How? Cells divide to produce cells of their own kind. All cells thus come from pre-existing cells. Brain Teasers @0:30 Cell Discovery @1:02 Cell & Organelles @4:48 Hypotonic Solution @7:31 Isotonic Solution @7:50 Hypertonic Solution @8:09 Cell Wall @10:02 Osmosis is a Classic Characteristic of a Living Cell @11:55 Nucleus @12:59 Cell Organelles @16:11 Storage Sac @24:10 Cell Division @25:25 #Osmosis #Cytoplasm #Hypotonic #Flattened #Multicellular #Microscope #Organelle #Prokaryotic #Teasers #Cytoplasm #Manishika #Examrace More interesting topics subscribe at TestPrep:    / testprep   NCERT, Yojana, Kurukshetra, Down to Earth, Science, Social Studies and More interesting topics subscribe at ExamraceHindi:    / examracehindi   For kids videos subscribe to FunProf:    / funprof   For Science Class 11-12 and important topics subscribe to DoorStepTutor:    / doorsteptutor   #Biology #Environment #NSO #NSTSE #NTSE #NSO #NSTSE #Olympiad #NCERT #VVM #examrace #upsc #ugcnet