Faafitaanka iyada oo loo marayo xuubka unugga

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Waxaan sharxi karaa sababta qaybaha qaarkood ay u dhaafi karaan xuubka unugga, qaarna aysan u dhaafi karin.

Hordhac

Casharkaan waxaad ku baran doontaa sida walxuhu ugu faafi karaan (diffuse) xuubka unugga iyo sababta qaarkood uga faafi karin. Waa inaad horay u garanaysid in unuggu leeyahay xuub (cell membrane) iyo in walxuhu u dhaqaaqaan meelaha ay ku badan yihiin una gudbaan meelaha ay ku yar yihiin.

Muuji qoraalka

All substances, including the cell cytoplasm and substances within it, are made up of particles. Particles of some substances diffuse into and out of a cell by moving through small holes in the cell membrane. The particles that make up some substances are too big to diffuse through the holes in the cell membrane. The cell membrane is selectively-permeable because only some substances can diffuse through it. The net movement of particles through a cell membrane is down a concentration gradient.

Warqadda shaqada

weli lama diyaarin

Imtixaannada

1. Noojeey (organisms) kee baa ka kooban unugyo (cells)?
- kaliya xayawaanka
- kaliya xayawaanka iyo dhirta
- kaliya xayawaanka, dhirta iyo fangaska (fungi)
- Jawaabta saxda ah:dhammaan noolaha
2. Jaantuskee ayaa si fiican u matalaya walxaha (particles) ka kooban cytoplasm-ka unugga?
- jaantuska A
- Jawaabta saxda ah:jaantuska B
- jaantuska C
3. Qaybaha oksijiinta waxay ku dhex socon doonaan cytoplasm-ka unugga iyadoo ay ugu wacan tahay habka ...
- fiirsashada.
- Jawaabta saxda ah:faafinta (diffusion).
- heerka (gradient).
- xal.
4. Jaantuskee ayaa si sax ah loo calaamadeeyay?
- jaantuska A: dhaqdhaqaaqa guud wuxuu kor u socdaa heerka uruurinta (concentration gradient) laga bilaabo hoos ilaa sare
- Jawaabta saxda ah:jaantuska B: dhaqdhaqaaqa guud wuxuu hoos u socdaa heerka uruurinta laga bilaabo sare ilaa hoos
- jaantuska C: dhaqdhaqaaqa guud wuxuu ka hor imanayaa heerka uruurinta laga bilaabo hoos ilaa sare
- jaantuska D: ma jiro heer uruurin iyo dhaqdhaqaaq guud toona

1. Waa kuwee kuwaan astaamaha xuubka unugga (cell membrane)?
- Jawaabta saxda ah:wuxuu xakameeyaa waxa geli kara oo ka bixi kara unugga
- waa meesha ay ka dhacdo neefsashada unugga (cellular respiration)
- waa meesha lagu kaydiyo walxaha
- wuxuu sameeyaa cuntada unugga
- wuxuu ku wareegsan yahay cytoplasm-ka unugga
2. War, hadal kee baa run ah oo ku saabsan xuubka unugga (cell membrane)?
- Ma laha daloolo (holes) gabi ahaanba.
- Wuxuu leeyahay daloolo waaweyn.
- Jawaabta saxda ah:Wuxuu leeyahay daloolo yaryar.
3. Yaa qaba fikrada saxda ah ee ku saabsan xuubka unugga (cell membrane)?
- Aisha: “Qaybaha (particles) dhammaan walxaha waxay mari karaan daloollada ku jira xuubka.”
- Alex: “Kaliya qaybaha waaweyn ayaa mari kara daloollada ku jira xuubka.”
- Jawaabta saxda ah:Jacob: “Kaliya qaybaha yaryar ayaa mari kara daloollada ku jira xuubka.”
- Sofia: “Ma jiraan qaybo mari kara daloollada ku jira xuubka.”
4. Waa noocee unug (particle) aan dhex mari doonin daloolada xuubka unugga (cell membrane)?
- unugga A
- unugga B
- Jawaabta saxda ah:unugga C
5. Hee, maxay tahay hadalka saxda ah?
- Jawaabta saxda ah:Dhaqdhaqaaqa saafiga ah ee walxaha carbon dioxide wuxuu ka imaanayaa gudaha ilaa dibadda.
- Walxaha carbon dioxide ma awoodaan inay dhex maraan xuubka unugga (cell membrane).
- Walxaha carbon dioxide waxay ku faafi doonaan kor u kaca heerka ururinta (concentration gradient).
- Heerka ururinta walxaha carbon dioxide wuu ka sarreeyaa dibadda unugga.
- Ma jiro heer ururin (concentration gradient) oo ku taal xuubka unugga.

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