Vim li cas nws thiaj li hu ua deoxyribonucleic acid?
Vim li cas nws thiaj li hu ua deoxyribonucleic acid?

Video: Vim li cas nws thiaj li hu ua deoxyribonucleic acid?

Video: Vim li cas nws thiaj li hu ua deoxyribonucleic acid?
Video: Vim li cas koj lub neej thiaj li tsis txawj muaj nyiaj yog ua cas? ( How to Change your life) 2024, Hlis ntuj nqeg
Anonim

Deoxyribonucleic acid ( DNA ) yog ib qho loj molecule tsim los ntawm nucleotides (phosphate + qab zib + lub hauv paus) qhov twg cov suab thaj yog ' nruab nrab' ntawm nucleotide. Lub 'deoxyribo' hauv lub npe yog muab los ntawm cov suab thaj DNA . Phosphates thiab qab zib tsim tawm sab nraud ntawm cov molecule thaum lub hauv paus ua rau lub hauv paus.

Ua raws li qhov xav tau, ua li cas deoxyribonucleic acid tau txais nws lub npe?

DNA . DNA yog tsim thiab nyob hauv lub nucleus ntawm cov cell nyob. DNA tau txais nws lub npe los ntawm cov piam thaj molecule muaj nyob rau hauv nws pob txha (deoxyribose); txawm li cas los xij, nws tau nws qhov tseem ceeb ntawm nws tshwj xeeb qauv. Plaub qhov sib txawv nucleotide hauv paus tshwm sim hauv DNA Adenine (A), cytosine (C), guanine (G), thiab thymine (T).

Tsis tas li ntawd, vim li cas DNA yog cov kua qaub? Lub acidity ntawm DNA yog tshwm sim los ntawm muaj cov phosphate pawg uas yog lawv tus kheej acidic . Ua ntej tshaj plaws, DNA Tsis yog tsim los ntawm "nucleotide bases" tab sis ntawm nucleotides. Cov no suav nrog cov piam thaj uas khi rau ib qho ntawm 4 nucleobases Adenine, Cytosine, Guanine lossis Thymine (Uracil hauv RNA) thiab pab pawg phosphate.

Tsuas yog li ntawd, lwm lub npe rau deoxyribonucleic acid yog dab tsi?

Cov xov ntawm ob lub helix DNA hu ua chromosomes, yog li koj feem ntau yuav pom ob lo lus siv sib hloov. DNA kuj qee zaum hu ua nucleic acid , luv rau deoxyribonucleic acid.

Deoxyribonucleic acid nyob qhov twg?

Feem ntau DNA yog nyob nyob rau hauv lub cell nucleus (qhov twg nws yog hu ua nuclear DNA ), tab sis ib qho me me ntawm DNA tau kuj be pom nyob rau hauv lub mitochondria (qhov twg nws yog hu ua mitochondrial DNA los yog mtDNA).

Pom zoo: