Kimyoviy texnologiya kafedra oziq-ovqat texnologiyasi 201-guruh talabasi Bekberganova Ozoda Mavzu: Nuklein kislotalar biosintezi Ko׳rib chiqiladigan savollar dnk va irsiyat. Dnk biosintezi

Kimyoviy texnologiya kafedra oziq-ovqat texnologiyasi 201-guruh talabasi Bekberganova Ozoda Mavzu: Nuklein kislotalar biosintezi

Ko׳rib chiqiladigan savollar

DNK va irsiyat. DNK biosintezi (replikatsiya).

Replikatsiya – nasliy axborotni o׳tkazish usuli.

RNK biosintezi (transkripsiya) – DNKdagi axborotni RNK sifatida shakllanishi.

Posttranskipsion o׳zgarishlar – RNK ning yetilishi.

DNA replication semiconservative by.

Kinds replication:

The conservative

The semiconservative

The dispersive

In eucariot cages replication begins at once in several (thousand) DNA points

(dNMP) n + dNTP ®

(dNMP) n+1 + PP

For DNA synthesis are necessary:

DNA-polimeraza DNA-dependent

Desoxribonucleozid threefosfate

DNA a matrix

Magnesium ions

DNA-helikaza

DNA-giraza

DNA-connecting of the squirrel

Biosynthesis RNA

Synthesis RNA is carried out by a transcription.

The way of transfer of the genetic information which has been written down in DNA, in RNA and through it to ribosomes is called as a transcription

The transcribed site of DNA is called transkripton.

It contains from 300 to 108 nucleotidi.

Nuklein kislotlar

Nuklein kislotalar – tabbiy yukori molekulali polimerlar, irsiy axborotni saklash va nasldan nasldan utkazish vazifasini bajaradi.

DNK – dezoksiribonuklein kislota

RNK – ribonuklein kislota

Nukleotid tuzilishi

Nukleotidlar – DNK va RNK monomerlari.
Nukleotid 3 kismdan tashkil topgan:
Azotli asoslar
Monosaxarid
Fosfat gruppa