Cell: The Unit of Life
Cell Theory
Cell theory do baatein kehti hai: har living cheez cells se bani hai, aur har cell kisi pehle se maujood cell se banta hai.
Schleiden ne plants padhe aur Schwann ne animals, aur dono ne saath me propose kiya ki saari living cheezein cells se bani hain. Ye idea ka pehla aadha hissa tha.
Par wo ye nahi bata paaye ki naye cells kahaan se aate hain. Virchow ne missing piece jodi: ek cell sirf kisi existing cell ke divide hone se banta hai. Dono milkar aaj ki cell theory hai.
Yahaan students galti karte hain
Trap ye hai ki cells non-living matter se apne aap ban jaate hain. Aisa nahi hota. Har cell ek existing cell ke divide hone se banta hai. Yahi baat Virchow ne jodi thi, aur isiliye line 'har cell ek cell se' yaad rakhne layak hai.
Yaad rakho
Saari life cells hai. Har cell ek cell se aata hai.
Exam me kaise kaam aata hai: yaad rakho kisne kya joda. Schleiden (plants) aur Schwann (animals) ne pehla hissa diya, aur Virchow ne joda ki cells sirf existing cells se banti hain.
Ye kahaan jud'ta hai
Ye ek rule chupke se ye rok deta hai ki life kahin se bhi apne aap ban jaaye, aur ye wound bharne se lekar tumour badhne tak sab ke peeche hai: sab kuch existing cells ka divide hona hai. Jis pal cells normal control ke bina divide karte hain, cancer ban jaata hai.
Ek quick check
Kis scientist ne joda ki naye cells sirf pehle se maujood cells se bante hain?
- ASchleiden
- BSchwann
- CVirchow
- DRobert Hooke