microbiology exam 2

Centridogma

DNA(replication)(transcription)--> RNA(replication)--> PROTEINS

DNA

1)antiparallel
- H 5'----3' OH
-OH3'----5'H
2) Phosphates deoxyribose backbone
3) H bonding allows for A-T, G-C, and double helix structure
4) Semiconservative replication is allowed by complimentary pairing

Helicase

breaks H bonds, breaks into replication fork

DNA polymerase synthesizes from _______ but reads from _______

DNA polymerase synthesizes from 5'--3' but reads from 3'--5'

Replication fork

where helicase unwinds

Transcription begins when...

RNA polymerase binds to the promotor sequence

If glucose levels ^, then cAMP levels are down, which means...

it cannot bind to the operon. cAMP is needed to turn on CAP, so which no cAMP bound to CAP, it cannot bind

DNA is semiconservative, meaning

from the original parent strand, 2 new daughter strands result