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

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

#Biology #Environment #NSO #NSTSE #NTSE #NSO #NSTSE #Olympiad #NCERT #VVM #examrace #upsc #ugcnet

[manishajamdade]

Thanks mam ...ur teaching is very understandable

[rabhmaurya]

Aapke videos bahut valuable h hm jaise students ke liye, thanks a lot mam .

[hinabaignasir]

Mam you are nice teachers and I like your way to teach. You are great teacher 😊😊😊😊😊💐💐💐💐💐💐💐🍫🍫🍫🍫🍫🍫🍫🍫

[csmanakawadmanakawad]

Thank you so much mam 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🏼🙏🙏🙏🙏🏼🙏

[gurdippkaur]

Hello mam...
Your explanation is very interesting....plz explain chapter 1 of CBSE board our environment....plz mam

[pradyumnapradhan]

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[roe]

nice explanation, many other videos take long duration, but this is just hardly 30 min that can clear all doubts .

[huntersudhi]

Mam plzz do 1st chapter matter in our surroundings plzzz mam

[prabharamesh]

this is very very useful for me and it is very easy😊

[intended_me]

Ma'am please complete the series till 10th soon ! Your teaching is of immense help .

[sandhyapaschapur]

Ma'am your teaching is too fantastic please cover the 9th biology

[diyabhargava]

Mam please make a video on physics and chemistry of class 9 ur teaching way and u both are interesting

[shivanshthegreat]

Nice explanation mam
Plz make another video on it

[meenakshi]

Mam your brain teasures are very useful

[nitinagnihotri]

Excellent mam. You are all rounder. You are the best teacher of geography . But whatever you teach that is mind blowing.

[badhri]

mam i really love your explanation it is just awesome
👍👍
👌👌
👏👏👏👏

[kanick]

Mam raisins have dead cells then how they can Mam plz reply..

[lakshmidistribution]

Really the superb teachers u r mam...no one can't explain like this....upcoming videos plz talk in English itself plz...u r great mam

[mahithayadav]

Nice explanation mam please put some more videos your teaching is very understandable

[huntersudhi]

Mam ur teaching was very nice plzzz do ncert of 1s chapter matter is our surroundings