Faafitaanka iyada oo loo marayo xuub si gaar ah u daloola: shaybaar

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Waxaan sharxi karaa indha-indheynta faafitaanka iyada oo loo marayo xuub si gaar ah u daloola (selectively-permeable membrane).

Hordhac

Salaan qaalib, maanta waxaan ku barayaa cashar ku saabsan faafinta (diffusion) iyada oo loo marayo xuub si gaar ah u dhex mari kara, oo ah shay aad horay uga yeesheen fikrad ku saabsan sida walxuhu u dhaqaaqaan. Haddii aad hore u fahantay waxa faafintu tahay iyo sida xuubka unuggu u shaqeeyo, waxaad diyaar u tahay inaad fiiriso sida ay tani uga dhaqanto si wax ku ool ah. Casharkani wuxuu kuu siin doonaa fursad aad ku sharaxdo waxa aad indhaha ku aragto marka ay walxuhu dhex maraan xuubka.

Muuji qoraalka

Particles of some substances are small enough to diffuse through holes in a selectively-permeable membrane. Particles of these substances move through the selectively-permeable membrane in both directions. Predict the direction of net movement of particles through a selectively-permeable membrane. Observe the direction of net movement of a substance through a selectively-permeable membrane (e.g. Visking tubing). Explain observations of the diffusion of a substance through a selectively-permeable membrane.

Warqadda shaqada

weli lama diyaarin

Imtixaannada

1. Waa maxay magaca qaab-dhismeedka calaamadeysan A ee jaantuska unugga xayawaanka?
- Jawaabta saxda ah:xuubka unugga (cell membrane)
- gidaarka unugga (cell wall)
- cytoplasm (cytoplasm)
- nucleus (nucleus)
2. Waa maxay shaqada xuubka unugga (cell membrane) ee unugga xayawaanka?
- Jawaabta saxda ah:Wuxuu xakameeyaa waxa soo gali kara unugga iyo waxa ka bixi kara.
- Waa dareere buuxiya unugga.
- Waa halka ay ka dhacdo photosynthesis-ka (sawirka cuntada).
- Wuxuu kaydiyaa DNA-da unugga.
3. Yaa si sax ah u sharxaya sida qaybaha oksijiinta (oxygen) ugu soo galeen unugga?
- Jacob: “Unuggu wuu neefsaday qaybaha oksijiinta.”
- Jawaabta saxda ah:Aisha: “Qaybuhu waxay ku faafeen (diffused) xuubka unugga.”
- Lucas: “Unuggu wuxuu ka nuugay dhiigga.”
- Sofia: “Unuggu waa mid si buuxda u dhex mari kara dhammaan qaybaha, oo ay ku jiraan oksijiinta.”
4. Qaybaha yaryar ee carbon dioxide …
- Jawaabta saxda ah:waxay dhex mari karaan xuubka unugga labada jiho.
- ma dhex mari karaan xuubka unugga.
- waxay kaliya u dhex mari karaan xuubka unugga gudaha unugga ilaa dibadda unugga.
- waxay kaliya u dhex mari karaan xuubka unugga dibadda unugga ilaa gudaha unugga.

1. Qaybaha yar yar ee iodine waxay kaliya u dhex mari karaan daloollada xuubka sababtoo ah waxay yihiin ...
- kuwa isku urursan.
- kuwa la kululeeyay.
- kuwa waaweyn.
- Jawaabta saxda ah:kuwa yaryar.
2. Qaybaha iodine waxay dhex maraan xuubka oo galaan tuubada sababtoo ah diffusion (fiditaanka) iyagoo hoos u dhacaya {{}} gradient.
- Jawaabta saxda ah:concentration (uruurinta)
- diffusion (fiditaan)
- movement (dhaqdhaqaaq)
- net (saafi)
3. Jaantusku wuxuu muujinayaa tijaabada bilowga. Yaa si sax ah u saadaaliya waxa uu noqon doono biyaha (liquid) **gudaha** tuubada ka dib 10 daqiiqo?
- Alex: “Waxay noqon doontaa huruud ama bunni khafiif ah.”
- Andeep: “Weli waxay noqon doontaa mid aan midab lahayn.”
- Jawaabta saxda ah:Sofia: “Waxay noqon doontaa buluug/madow.”

Waxa ardaydu arkaan