2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
β-galactosidase yog ib qho enzyme uas hloov galactose mus rau lactose. … Cov txheej txheem coding rau cov enzyme β-galactosidase yog nyiam dua cov tshuaj tiv thaiv kab mob vim tias cov recombinants tuaj yeem pom tau yooj yim thiab cov txheej txheem tsis tshua muaj siab.
Vim li cas cov txheej txheem coding ntawm ib qho enzyme beta-galactosidase yog ib qho kev xaiv xaiv tau zoo dua piv rau cov npe saum toj no?
ntxig rau hauv cov txheej txheem coding ntawm ib qho enzyme, b galactosidase, uas ua rau ua kom cov enzyme hu ua insertional inactivation coding sequence rau cov enzyme b-galactosidase yog nyiam dhau cov tshuaj tiv thaiv kab mob vim tias cov recombinants tuaj yeem. ua tau yooj yim pom.
Yuav ua li cas yog qhov sib lawv liag ntawm β-galactosidase suav tias yog tus cim zoo dua li cov uas tau txheeb xyuas los ntawm koj hauv daim duab?
b Kev nkag ntawm rDNA rau hauvcov txheej txheem coding ntawm ib qho enzyme a-galactosidase ua rau inactivation ntawm enzyme hu ua insertional inactivation. … Yog li coding sequence ntawm a-galactosidase yog tus cim zoo dua.
Tus lej noob rau beta-galactosidase yog dab tsi?
In E. coli, the lacZ gene yog tus qauv gene rau β-galactosidase; uas yog tam sim no ua ib feem ntawm lub inducible system lac operon uas yog activated nyob rau hauv lub xub ntiag ntawm lactose thaum cov piam thaj qis.
Vim li cas nws thiaj xaiv tau tus cim rautshuaj tua kab mob genes?
Cov cim xaiv tau feem ntau yog cov tshuaj tiv thaiv kab mob. Cov no pab hauv cov txheej txheem ntawm kev xaiv khoom. Lawv kuj pab txheeb xyuas cov transformants thiab tso cai xaiv kom loj hlob tab sis kuj tshem tawm cov tsis-transformants.
Pom zoo:
Dab tsi yog txheej txheej txheej txheem nyob rau hauv lub ntiaj teb?
Lub neej muaj txheej txheem ntawm lub ntiaj teb yog the Biosphere. Lub neej muaj dabtsi? Cov kabmob lub neej yog qhov tseem ceeb ntawm lub sijhawm ntev ntawm cov kabmob tuaj yeem xav tau ua raws li qhov xav tau hauv kev ua haujlwm ua ntej tau teev tseg.
In java cov txheej txheem ntawm deallocation ntawm lub cim xeeb hu ua?
Hauv Java, kev tswj hwm kev nco yog txheej txheem ntawm kev faib thiab faib cov khoom, hu ua Memory management. Java ua lub cim xeeb tswj tau. Java siv qhov kev tswj hwm kev nco tsis siv neeg hu ua a khib nyiab. Kev faib kev nco hauv Java yog dab tsi?
Cov txheej txheem huab cua twg muaj txheej txheej ozone?
Feem ntau atmospheric ozone yog concentrated nyob rau hauv ib txheej nyob rau hauv the stratosphere, li ntawm 9 txog 18 mais (15 mus rau 30 km) saum lub ntiaj teb nto (saib daim duab hauv qab). Ozone yog ib qho molecule uas muaj peb lub atoms oxygen.
Thaum tus txheej txheem ntawm diluting ib qho kev daws rau qhov qis dua?
Thaum tus txheej txheem ntawm diluting ib qho kev daws kom qis dua, tus nqi ntawm cov kuab tshuaj tsis hloov. Cov tshuaj uas muaj qhov concentration ntawm 2 M yog diluted kom nws cov ntim tshiab yog plaub npaug ntawm cov ntim qub. Yuav ua li cas thaum lub sijhawm diluting cov tshuaj kom qis dua?
Rau cov txheej txheem lossis cov txheej txheem?
Cov txheej txheem yog feem ntau yog ntau lub npe hais txog cov qauv uas tuaj yeem txiav txim siab. Nws cov lus yog cov qauv, tab sis cov pov thawj qhia tau tias cov txheej txheem feem ntau raug siv los ua cov lus thiab ntau ntau, zoo li cov ntaub ntawv thiab cov txheej txheem thiab lawv cov lus siv tsawg dua cov ntaub ntawv thiab cov txheej txheem.
