DNA replication Flashcards
- What does the enzyme helicase do during DNA replication?
unwinds the double helix structure of DNA, separates to two single strands by breaking the hydrogen bonds between base pairs.
- what is a single stranded binding protein?
Binds to the DNA strands in order to keep them separated
- What does the enzyme primase do in DNA replication?
adds RNA primer to each strand, signaling where replication should start.
4.. What is the role of DNA polymerase in DNA replication?
-Attaches to primer & adds new nucleotides to original strands
-Builds a new strand by pairing each base with its complementary base.
- leading strand is copied continuously.
-RNA primer is removed after
- What happens on the lagging strand during DNA replication?
ligase closes gaps creating a complete strand. At sugar phosphate bone
6.What is the end result of DNA replication?
2 identical double-stranded DNA molecules are produced, each with one original strand and one newly synthesized strand.
DNA
molecule that carries genetic information for all living things.
Template strand
single strand of DNA used as a guide to make a new one.
Nucleotides
are the building blocks of DNA, made of A, G, C, and T.
Complementary
the new strand matches the template strand:
A pairs with T
G pairs with C
direction DNA strands run in
opposite directions (ANTI-PARALLEL)
what does DNA replication being semi-conservative mean
(one old strand, one new strand
RNA is temporary becuase
it needs to be replaced in the end with the final DNA structure
why is it important to replicate DNA
in order to fully duplicate cells properly, and to ensure each daughter cell receives a copy of the DNA.
where does DNA replication occur
nucleus of eukaryotic cells.
