Cov txheej txheem:
Video: Cov txiv pos nphuab puas muaj DNA?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ripe strawberries yog qhov zoo tshaj plaws rau kev rho tawm DNA vim lawv yooj yim pulverize thiab muaj enzymes hu ua pectinases thiab cellulases uas pab ua kom cov phab ntsa ntawm tes. Thiab qhov tseem ceeb tshaj plaws, strawberries muaj yim daim ntawv luam ntawm txhua tus chromosome (lawv yog octoploid), yog li muaj ntau DNA cais.
Khaws qhov no hauv kev xav, vim li cas txiv pos nphuab muaj DNA?
Strawberries xav tau DNA vim DNA ua kom cov txiv hmab txiv ntoo. Cov DNA directs tag nrho cov cell kev ua ub no thiab dab tsi ua . Cov DNA kuj muab cov lus qhia coded rau lub strawberry tsim cov protein. Yog li tsis muaj DNA tus strawberry hlwb yuav tsis paub dab tsi ua thiab yuav ua li cas los tsim nws cov proteins.
Ib sab saum toj no, ntau npaum li cas DNA muaj strawberry? Txhua yam me me ntawm cov khoom muaj sia, hu ua cell, muaj DNA hauv nws. Hauv tib neeg txhua lub hlwb muaj 2cop ua DNA , mas in strawberries txhua tus ntawm no muaj 8cop ua DNA (cov kws tshawb fawb hu qhov no octoploid). Qhov ntawd txhais tau tias strawberries muaj 4x ua ntau cov ntawv luam ntawm DNA raws li tib neeg, ua rau nws yooj yim dua 4 zaug pom!
Ua raws li qhov no, koj yuav tau txais DNA los ntawm strawberry li cas?
YUAV UA LI CAS EXTRACT STRAWBERRY DNA
- Txias cov cawv hauv lub freezer.
- Tshem tawm cov nplooj ntsuab ntawm cov txiv pos nphuab thiab ntxiv rau lub hnab. Muab cov txiv pos nphuab tso rau hauv lub pulp.
- Ntxiv 1 tablespoon ntawm xab npum tais diav, ib teaspoon ntsev, thiab 1/3 ntawm ib khob dej rau lub hnab. Sib tov.
DNA ntawm Strawberry zoo li cas?
Cov DNA yuav zoo li ib tug dawb, pos huab los yog nplua stringy khoom. DNA tsis pom zoo li ib txoj hlua rau ntawm qhov muag liab qab, tab sis thaum ntau txhiab threads ntawm DNA tam sim no, koj yuav tau pom cov pab pawg loj ntawm threads ntawm DNA . 5. yog DNA pom nyob rau hauv tag nrho cov nyob los yog ib zaug nyob hlwb?
Pom zoo:
Cov txiv hmab txiv ntoo puas tuaj yeem tsim hluav taws xob?
Citrus txiv hmab txiv ntoo tuaj yeem ua tau qhov no vim tias lawv muaj citric acid, ib qho electrolyte uas tso cai rau hluav taws xob ntws.Lub hwj chim tiag tiag los ntawm kev sib pauv hluav taws xob ntawm ib khub electrodes uas koj ntxig rau hauv cov txiv hmab txiv ntoo
Vim li cas nws thiaj li yuav tsum tau ua kom cov txiv pos nphuab hauv DNA rho tawm?
Txheej txheem. Lub hom phiaj ntawm kev sib tsoo cov txiv pos nphuab yog txhawm rau rhuav tshem cov phab ntsa ntawm tes nrog rau cov cellular thiab cov ntaub so ntswg. Lub extraction tsis pab tso tawm DNA los ntawm ib puag ncig cell Cheebtsam ntawm crushed strawberry. Cov lim tau siv los tshem tawm cov khoom loj ntawm cov tshuaj xws li cov noob
Puas bryophytes muaj txiv hmab txiv ntoo?
Bryophytes. Bryophytes yog ib qho kev faib ntawm cov nroj tsuag uas suav nrog tag nrho cov tsis-vascular, av nroj tsuag thiab tuaj yeem faib ua peb pawg: mosses, hornworts thiab liverworts. Mosses, hornworts thiab liverworts tag nrho cov me nyuam siv spores ntau dua li cov noob thiab tsis tsim ntoo, txiv hmab txiv ntoo lossis paj
Cov txiv hmab txiv ntoo thiab zaub puas tsim hluav taws xob?
Txiv hmab txiv ntoo thiab hlau 'Cov txiv hmab txiv ntoo los yog zaub ua tsis tau nws tus kheej. 'Thaum koj ntxig ob lub hlau sib txawv thiab txuas nrog cov hlau, koj tsim ib qho hluav taws xob hluav taws xob. Tom qab ntawd, thaum cov khoom no raug coj mus rau hauv kev sib cuag nrog cov electrolytes, lub roj teeb cov tshuaj tiv thaiv pib tsim cov voltage
Puas yog cov txiv hmab txiv ntoo ntawm Lavxias teb sab txiv ntseej noj tau?
Cov tawv ntoo ntawm Lavxias teb sab txiv ntseej yog thawj zaug du thiab grey, thiab tom qab ntawd dhau los ua tsis sib xws thiab wrinkled tom qab. Nws cov txiv hmab txiv ntoo zoo li txiv hmab txiv ntoo, txog ½ ntiv tes ntev, thiab daj thaum hluas (tig liab thaum paub tab), qhuav thiab noj mov, tab sis qab zib thiab noj tau