Video: Dab tsi yog pawg ua haujlwm hauv molecules?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov pab pawg ua haujlwm yog cov pab pawg tshwj xeeb ntawm atomswithin molecules uas muaj lawv tus yam ntxwv yam ntxwv, tsis hais lwm yam atoms tam sim no nyob rau hauv a molecule . Cov piv txwv feem ntau yog cawv, amines, carboxylicacids, ketones, thiab ethers.
Hais txog qhov no, cov piv txwv ua haujlwm pab pawg yog dab tsi?
Txhua hom organic molecule muaj nws tus kheej hom pab pawg ua haujlwm . Cov pab pawg ua haujlwm Nyob rau hauv biomolecules ua lub luag haujlwm tseem ceeb hauv kev tsim cov molecules zoo li DNA, proteins, carbohydrates, thiab lipids. Cov pab pawg ua haujlwm muaj xws li: hydroxyl, methyl, carbonyl, carboxyl, amino, phosphate, thiab sulfhydryl.
Tsis tas li ntawd, pab pawg ua haujlwm ua haujlwm li cas? Hauv cov organic chemistry, pab pawg ua haujlwm tshwj xeeb pab pawg ntawm atoms nyob rau hauv molecules, uas yog lub luag hauj lwm rau cov yam ntxwv tshuaj tiv thaiv ntawm cov molecules. Tib yam pab pawg ua haujlwm yuav tau txais cov tshuaj tiv thaiv zoo ib yam lossis cov tshuaj tiv thaiv tsis hais qhov loj ntawm lawv qhov nws yog ib feem ntawm.
Kuj kom paub, dab tsi yog 7 pawg ua haujlwm?
Muaj 7 tseem ceeb pab pawg ua haujlwm Nyob rau hauv chemistry ntawm lub neej: Hydroxyl, Carbonyl, Carboxyl, Amino, Thiol, Phosphate, thiab aldehyde pab pawg.
Dab tsi yog cov yam ntxwv ntawm pawg ua haujlwm?
A pab pawg ua haujlwm ua ib feem ntawm ib tug loj molecule. Piv txwv li, -OH, hydroxyl pab pawg thatcharacterizes alcohols, yog ib qho oxygen nrog hydrogen txuas. Nws tuaj yeem pom ntawm txhua tus lej ntawm cov molecules sib txawv. Tsuas yog aselements muaj cov khoom tshwj xeeb, pab pawg ua haujlwm muaj yam ntxwv chemistry.
Pom zoo:
Lub luag haujlwm ntawm CDK yog dab tsi hauv lub cev ua haujlwm ntawm tes tshwj xeeb hauv lub voj voog ntawm tes?
Los ntawm phosphorylation, Cdks teeb liab lub xov tooj ntawm tes uas nws tau npaj kom dhau mus rau theem tom ntej ntawm lub voj voog ntawm tes. Raws li lawv lub npe qhia, Cyclin-Dependent Protein Kinases yog nyob ntawm cyclins, lwm chav kawm ntawm kev tswj hwm cov protein. Cyclins khi rau Cdks, ua kom cov Cdks rau phosphorylate lwm cov molecules
Dab tsi feem ntau yog pab pawg ua haujlwm thiab vim li cas cov pab pawg no tseem ceeb?
Cov pab pawg ua haujlwm tau txuas mus rau carbonbackbone ntawm cov organic molecules. Lawv txiav txim siab tus yam ntxwv thiab tshuaj lom neeg reactivity ntawm molecules. Cov pab pawg ua haujlwm tsis tshua muaj kev ruaj ntseg dua li cov pa roj carbon monoxide thiab zoo li yuav koom nrog cov tshuaj tiv thaiv
Dab tsi yog qhov sib txawv ntawm cov atomic loj los ntawm sab saum toj mus rau hauv qab hauv ib pab pawg?
Los ntawm sab saum toj mus rau hauv qab ib pawg, electronegativity txo. Qhov no yog vim tus naj npawb atomic nce ib pawg, thiab yog li muaj kev ncua deb ntawm valence electrons thiab nucleus, los yog ntau dua atomic radius
Dab tsi yog pawg ntawm 3 nitrogen hauv paus hauv RNA hu ua?
Lub hauv paus mRNA tau muab faib ua peb pawg, hu ua codons. Txhua codon muaj cov txheej txheem ntxiv ntawm cov hauv paus, hu ua anticodon. Anticodons yog ib feem ntawm kev hloov RNA (tRNA) molecules
Cov txheej txheem dab tsi yog lub luag haujlwm rau txoj haujlwm ua haujlwm sib txawv?
Position-effect variegation (PEV) tshwm sim thaum cov noob ib txwm nyob hauv euchromatin yog sib xyaw nrog heterochromatin los ntawm kev hloov kho lossis hloov pauv. Thaum lub ntim ntim heterochromatin kis thoob plaws heterochromatin / euchromatin ciam teb, nws ua rau kev hloov pauv ntawm kev ntsiag to hauv tus qauv stochastic